57697509 has 16 divisors (see below), whose sum is σ = 81607680. Its totient is φ = 36157680.

The previous prime is 57697499. The next prime is 57697513. The reversal of 57697509 is 90579675.

57697509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57697509 - 2⁸ = 57697253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57697589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3604 + ... + 11330.

It is an arithmetic number, because the mean of its divisors is an integer number (5100480).

Almost surely, 2^57697509 is an apocalyptic number.

It is an amenable number.

57697509 is a deficient number, since it is larger than the sum of its proper divisors (23910171).

57697509 is a wasteful number, since it uses less digits than its factorization.

57697509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880.

The product of its (nonzero) digits is 595350, while the sum is 48.

The square root of 57697509 is about 7595.8876373996. The cubic root of 57697509 is about 386.4135566895.

The spelling of 57697509 in words is "fifty-seven million, six hundred ninety-seven thousand, five hundred nine".