56691575 has 6 divisors (see below), whose sum is σ = 70297584. Its totient is φ = 45353240.

The previous prime is 56691533. The next prime is 56691577. The reversal of 56691575 is 57519665.

It is not a de Polignac number, because 56691575 - 2¹⁰ = 56690551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56691577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1133807 + ... + 1133856.

It is an arithmetic number, because the mean of its divisors is an integer number (11716264).

Almost surely, 2^56691575 is an apocalyptic number.

56691575 is a deficient number, since it is larger than the sum of its proper divisors (13606009).

56691575 is a wasteful number, since it uses less digits than its factorization.

56691575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267673 (or 2267668 counting only the distinct ones).

The product of its digits is 283500, while the sum is 44.

The square root of 56691575 is about 7529.3807846330. The cubic root of 56691575 is about 384.1547205476.

The spelling of 56691575 in words is "fifty-six million, six hundred ninety-one thousand, five hundred seventy-five".