57065515 has 32 divisors (see below), whose sum is σ = 79966656. Its totient is φ = 38707200.

The previous prime is 57065509. The next prime is 57065521. The reversal of 57065515 is 51556075.

It is an interprime number because it is at equal distance from previous prime (57065509) and next prime (57065521).

It is not a de Polignac number, because 57065515 - 2⁵ = 57065483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46915 + ... + 48115.

It is an arithmetic number, because the mean of its divisors is an integer number (2498958).

Almost surely, 2^57065515 is an apocalyptic number.

57065515 is a deficient number, since it is larger than the sum of its proper divisors (22901141).

57065515 is a wasteful number, since it uses less digits than its factorization.

57065515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 57065515 is about 7554.1720261058. The cubic root of 57065515 is about 384.9975037787.

The spelling of 57065515 in words is "fifty-seven million, sixty-five thousand, five hundred fifteen".