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57472865 = 515176123
BaseRepresentation
bin1101101100111…
…1011101100001
311000010220221122
43123033131201
5104203112430
65411502025
71265340242
oct333173541
9130126848
1057472865
112a49523a
12172b7915
13bba3918
1478c0cc9
1550a3ee5
hex36cf761

57472865 has 8 divisors (see below), whose sum is σ = 69425088. Its totient is φ = 45673200.

The previous prime is 57472861. The next prime is 57472871. The reversal of 57472865 is 56827475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57472865 - 22 = 57472861 is a prime.

It is a super-2 number, since 2×574728652 = 6606260422616450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57472861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37307 + ... + 38816.

It is an arithmetic number, because the mean of its divisors is an integer number (8678136).

Almost surely, 257472865 is an apocalyptic number.

It is an amenable number.

57472865 is a deficient number, since it is larger than the sum of its proper divisors (11952223).

57472865 is a wasteful number, since it uses less digits than its factorization.

57472865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76279.

The product of its digits is 470400, while the sum is 44.

The square root of 57472865 is about 7581.0860039971. The cubic root of 57472865 is about 385.9114068204.

The spelling of 57472865 in words is "fifty-seven million, four hundred seventy-two thousand, eight hundred sixty-five".

Divisors: 1 5 151 755 76123 380615 11494573 57472865