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52523980 = 22519672063
BaseRepresentation
bin1100100001011…
…1001111001100
310122211111100121
43020113033030
5101421231410
65113434324
71205306065
oct310271714
9118744317
1052523980
1127715053
121570b9a4
13ab601a2
146d9356c
1549279da
hex32173cc

52523980 has 48 divisors (see below), whose sum is σ = 117895680. Its totient is φ = 19597248.

The previous prime is 52523971. The next prime is 52523981. The reversal of 52523980 is 8932525.

52523980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (52523981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24429 + ... + 26491.

It is an arithmetic number, because the mean of its divisors is an integer number (2456160).

Almost surely, 252523980 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 52523980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58947840).

52523980 is an abundant number, since it is smaller than the sum of its proper divisors (65371700).

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

52523980 is a wasteful number, since it uses less digits than its factorization.

52523980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2156 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 52523980 is about 7247.3429613894. The cubic root of 52523980 is about 374.5006212100.

The spelling of 52523980 in words is "fifty-two million, five hundred twenty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 67 76 95 134 190 268 335 380 670 1273 1340 2063 2546 4126 5092 6365 8252 10315 12730 20630 25460 39197 41260 78394 138221 156788 195985 276442 391970 552884 691105 783940 1382210 2626199 2764420 5252398 10504796 13130995 26261990 52523980