Search a number
-
+
57525972 = 22373783223
BaseRepresentation
bin1101101101110…
…0011011010100
311000020121210120
43123130123110
5104211312342
65412551540
71265651130
oct333343324
9130217716
1057525972
112a521129
12173225b0
13bbc1b4a
1478d63c0
1550b4aec
hex36dc6d4

57525972 has 96 divisors (see below), whose sum is σ = 160161792. Its totient is φ = 15728256.

The previous prime is 57525961. The next prime is 57525973. The reversal of 57525972 is 27952575.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57525973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257853 + ... + 258075.

It is an arithmetic number, because the mean of its divisors is an integer number (1668352).

Almost surely, 257525972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57525972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80080896).

57525972 is an abundant number, since it is smaller than the sum of its proper divisors (102635820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57525972 is a wasteful number, since it uses less digits than its factorization.

57525972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 355 counting only the distinct ones).

The product of its digits is 220500, while the sum is 42.

The square root of 57525972 is about 7584.5877936774. The cubic root of 57525972 is about 386.0302355798.

The spelling of 57525972 in words is "fifty-seven million, five hundred twenty-five thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 37 42 74 83 84 111 148 166 222 223 249 259 332 444 446 498 518 581 669 777 892 996 1036 1162 1338 1554 1561 1743 2324 2676 3071 3108 3122 3486 4683 6142 6244 6972 8251 9213 9366 12284 16502 18426 18509 18732 21497 24753 33004 36852 37018 42994 49506 55527 57757 64491 74036 85988 99012 111054 115514 128982 129563 173271 222108 231028 257964 259126 346542 388689 518252 684833 693084 777378 1369666 1554756 2054499 2739332 4108998 4793831 8217996 9587662 14381493 19175324 28762986 57525972