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54252520 = 2357712729
BaseRepresentation
bin1100111011110…
…1001111101000
310210002022110121
43032331033220
5102342040040
65214453024
71226065420
oct316751750
9123068417
1054252520
11286957a3
1216204174
13b316baa
1472c3480
154b69c4a
hex33bd3e8

54252520 has 64 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 18332160.

The previous prime is 54252503. The next prime is 54252521. The reversal of 54252520 is 2525245.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (54252521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18516 + ... + 21244.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 254252520 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 54252520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70761600).

54252520 is an abundant number, since it is smaller than the sum of its proper divisors (87270680).

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

54252520 is a wasteful number, since it uses less digits than its factorization.

54252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 54252520 is about 7365.6309980884. The cubic root of 54252520 is about 378.5645753731.

Adding to 54252520 its reverse (2525245), we get a palindrome (56777765).

The spelling of 54252520 in words is "fifty-four million, two hundred fifty-two thousand, five hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 71 140 142 280 284 355 497 568 710 994 1420 1988 2485 2729 2840 3976 4970 5458 9940 10916 13645 19103 19880 21832 27290 38206 54580 76412 95515 109160 152824 191030 193759 382060 387518 764120 775036 968795 1356313 1550072 1937590 2712626 3875180 5425252 6781565 7750360 10850504 13563130 27126260 54252520