56507643 has 12 divisors (see below), whose sum is σ = 86423688. Its totient is φ = 35455680.

The previous prime is 56507629. The next prime is 56507669. The reversal of 56507643 is 34670565.

56507643 is a `hidden beast` number, since 5 + 6 + 5 + 0 + 7 + 643 = 666.

It is not a de Polignac number, because 56507643 - 2⁹ = 56507131 is a prime.

It is a super-2 number, since 2×56507643² = 6386227434830898, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56507598 and 56507607.

It is not an unprimeable number, because it can be changed into a prime (56507683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184513 + ... + 184818.

It is an arithmetic number, because the mean of its divisors is an integer number (7201974).

Almost surely, 2^56507643 is an apocalyptic number.

56507643 is a deficient number, since it is larger than the sum of its proper divisors (29916045).

56507643 is a wasteful number, since it uses less digits than its factorization.

56507643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369354 (or 369351 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 56507643 is about 7517.1565767915. The cubic root of 56507643 is about 383.7388157181.

The spelling of 56507643 in words is "fifty-six million, five hundred seven thousand, six hundred forty-three".