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53071972 = 2229457517
BaseRepresentation
bin1100101001110…
…1000001100100
310200212100001121
43022131001210
5102041300342
65133303324
71213050532
oct312350144
9120770047
1053071972
1127a59838
1215934b44
13acc2745
147097152
1549d5067
hex329d064

53071972 has 12 divisors (see below), whose sum is σ = 96078780. Its totient is φ = 25620896.

The previous prime is 53071961. The next prime is 53071979. The reversal of 53071972 is 27917035.

It can be written as a sum of positive squares in 2 ways, for example, as 14333796 + 38738176 = 3786^2 + 6224^2 .

It is not an unprimeable number, because it can be changed into a prime (53071979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228643 + ... + 228874.

It is an arithmetic number, because the mean of its divisors is an integer number (8006565).

Almost surely, 253071972 is an apocalyptic number.

It is an amenable number.

53071972 is a deficient number, since it is larger than the sum of its proper divisors (43006808).

53071972 is a wasteful number, since it uses less digits than its factorization.

53071972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457550 (or 457548 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 53071972 is about 7285.0512695519. The cubic root of 53071972 is about 375.7985283257.

The spelling of 53071972 in words is "fifty-three million, seventy-one thousand, nine hundred seventy-two".

Divisors: 1 2 4 29 58 116 457517 915034 1830068 13267993 26535986 53071972