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57872825 = 5217313381
BaseRepresentation
bin1101110011000…
…1000110111001
311000220020120222
43130301012321
5104303412300
65424225425
71301624303
oct334610671
9130806528
1057872825
112a73878a
121746b275
13bcb399a
147986973
155132785
hex37311b9

57872825 has 12 divisors (see below), whose sum is σ = 72182508. Its totient is φ = 46027200.

The previous prime is 57872821. The next prime is 57872833. The reversal of 57872825 is 52827875.

It can be written as a sum of positive squares in 6 ways, for example, as 779689 + 57093136 = 883^2 + 7556^2 .

It is not a de Polignac number, because 57872825 - 22 = 57872821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57872821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2366 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (6015209).

Almost surely, 257872825 is an apocalyptic number.

It is an amenable number.

57872825 is a deficient number, since it is larger than the sum of its proper divisors (14309683).

57872825 is a wasteful number, since it uses less digits than its factorization.

57872825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13564 (or 13559 counting only the distinct ones).

The product of its digits is 313600, while the sum is 44.

The square root of 57872825 is about 7607.4190761388. The cubic root of 57872825 is about 386.8045382135.

The spelling of 57872825 in words is "fifty-seven million, eight hundred seventy-two thousand, eight hundred twenty-five".

Divisors: 1 5 25 173 865 4325 13381 66905 334525 2314913 11574565 57872825