57056615 has 16 divisors (see below), whose sum is σ = 85363200. Its totient is φ = 35567520.

The previous prime is 57056609. The next prime is 57056663. The reversal of 57056615 is 51665075.

It is not a de Polignac number, because 57056615 - 2⁶ = 57056551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73715 + ... + 74484.

It is an arithmetic number, because the mean of its divisors is an integer number (5335200).

Almost surely, 2^57056615 is an apocalyptic number.

57056615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

57056615 is a deficient number, since it is larger than the sum of its proper divisors (28306585).

57056615 is a wasteful number, since it uses less digits than its factorization.

57056615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148222.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 57056615 is about 7553.5829246789. The cubic root of 57056615 is about 384.9774878612.

The spelling of 57056615 in words is "fifty-seven million, fifty-six thousand, six hundred fifteen".