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57210005 = 531136791
BaseRepresentation
bin1101101000111…
…1010010010101
310222122120101002
43122033102111
5104121210010
65402113045
71263164006
oct332172225
9128576332
1057210005
112a3257a6
12171ab785
13bb11098
1478531ad
1550511a5
hex368f495

57210005 has 8 divisors (see below), whose sum is σ = 68874624. Its totient is φ = 45619600.

The previous prime is 57209989. The next prime is 57210017. The reversal of 57210005 is 50001275.

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

It is not a de Polignac number, because 57210005 - 24 = 57209989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16841 + ... + 19950.

It is an arithmetic number, because the mean of its divisors is an integer number (8609328).

Almost surely, 257210005 is an apocalyptic number.

It is an amenable number.

57210005 is a deficient number, since it is larger than the sum of its proper divisors (11664619).

57210005 is a wasteful number, since it uses less digits than its factorization.

57210005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37107.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 57210005 is about 7563.7295694651. The cubic root of 57210005 is about 385.3221680699.

The spelling of 57210005 in words is "fifty-seven million, two hundred ten thousand, five".

Divisors: 1 5 311 1555 36791 183955 11442001 57210005