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57057351 = 3131463009
BaseRepresentation
bin1101100110101…
…0000001000111
310222100210222020
43121222001013
5104101313401
65354534223
71261656651
oct331520107
9128323866
1057057351
112a23103a
1217137373
13ba89760
1478136d1
155020d36
hex366a047

57057351 has 8 divisors (see below), whose sum is σ = 81928560. Its totient is φ = 35112192.

The previous prime is 57057347. The next prime is 57057359. The reversal of 57057351 is 15375075.

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

It is not a de Polignac number, because 57057351 - 22 = 57057347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57057359) 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, 731466 + ... + 731543.

It is an arithmetic number, because the mean of its divisors is an integer number (10241070).

Almost surely, 257057351 is an apocalyptic number.

57057351 is a deficient number, since it is larger than the sum of its proper divisors (24871209).

57057351 is a wasteful number, since it uses less digits than its factorization.

57057351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463025.

The product of its (nonzero) digits is 18375, while the sum is 33.

The square root of 57057351 is about 7553.6316431237. The cubic root of 57057351 is about 384.9791431890.

The spelling of 57057351 in words is "fifty-seven million, fifty-seven thousand, three hundred fifty-one".

Divisors: 1 3 13 39 1463009 4389027 19019117 57057351