56656533 has 4 divisors (see below), whose sum is σ = 75542048. Its totient is φ = 37771020.

The previous prime is 56656507. The next prime is 56656577. The reversal of 56656533 is 33565665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56656533 - 2⁶ = 56656469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56656491 and 56656500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56656133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9442753 + ... + 9442758.

It is an arithmetic number, because the mean of its divisors is an integer number (18885512).

Almost surely, 2^56656533 is an apocalyptic number.

It is an amenable number.

56656533 is a deficient number, since it is larger than the sum of its proper divisors (18885515).

56656533 is a wasteful number, since it uses less digits than its factorization.

56656533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885514.

The product of its digits is 243000, while the sum is 39.

The square root of 56656533 is about 7527.0534075427. The cubic root of 56656533 is about 384.0755534387.

The spelling of 56656533 in words is "fifty-six million, six hundred fifty-six thousand, five hundred thirty-three".