56577531 has 8 divisors (see below), whose sum is σ = 76345920. Its totient is φ = 37263752.

The previous prime is 56577529. The next prime is 56577541. The reversal of 56577531 is 13577565.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56577531 - 2¹ = 56577529 is a prime.

It is a super-2 number, since 2×56577531² = 6402034028111922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56577531.

It is not an unprimeable number, because it can be changed into a prime (56577541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113361 + ... + 113858.

It is an arithmetic number, because the mean of its divisors is an integer number (9543240).

Almost surely, 2^56577531 is an apocalyptic number.

56577531 is a deficient number, since it is larger than the sum of its proper divisors (19768389).

56577531 is a wasteful number, since it uses less digits than its factorization.

56577531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227305.

The product of its digits is 110250, while the sum is 39.

The square root of 56577531 is about 7521.8037065587. The cubic root of 56577531 is about 383.8969517869.

The spelling of 56577531 in words is "fifty-six million, five hundred seventy-seven thousand, five hundred thirty-one".