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52165057 = 721064593
BaseRepresentation
bin1100011011111…
…1100111000001
310122011021000011
43012333213001
5101323240212
65102024521
71202252500
oct306774701
9118137004
1052165057
112749a41a
1215578141
13aa659c9
146cdc837
1548a64a7
hex31bf9c1

52165057 has 6 divisors (see below), whose sum is σ = 60681858. Its totient is φ = 44712864.

The previous prime is 52165039. The next prime is 52165067. The reversal of 52165057 is 75056125.

It can be written as a sum of positive squares in only one way, i.e., 43020481 + 9144576 = 6559^2 + 3024^2 .

It is not a de Polignac number, because 52165057 - 211 = 52163009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52165067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 532248 + ... + 532345.

It is an arithmetic number, because the mean of its divisors is an integer number (10113643).

Almost surely, 252165057 is an apocalyptic number.

It is an amenable number.

52165057 is a deficient number, since it is larger than the sum of its proper divisors (8516801).

52165057 is a wasteful number, since it uses less digits than its factorization.

52165057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064607 (or 1064600 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 52165057 is about 7222.5381272791. The cubic root of 52165057 is about 373.6456197817.

The spelling of 52165057 in words is "fifty-two million, one hundred sixty-five thousand, fifty-seven".

Divisors: 1 7 49 1064593 7452151 52165057