56217577 has 16 divisors (see below), whose sum is σ = 62233920. Its totient is φ = 50461632.

The previous prime is 56217571. The next prime is 56217583. The reversal of 56217577 is 77571265.

It is an interprime number because it is at equal distance from previous prime (56217571) and next prime (56217583).

It is not a de Polignac number, because 56217577 - 2³ = 56217569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56217571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95478 + ... + 96064.

It is an arithmetic number, because the mean of its divisors is an integer number (3889620).

Almost surely, 2^56217577 is an apocalyptic number.

It is an amenable number.

56217577 is a deficient number, since it is larger than the sum of its proper divisors (6016343).

56217577 is a wasteful number, since it uses less digits than its factorization.

56217577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 102900, while the sum is 40.

The square root of 56217577 is about 7497.8381550951. The cubic root of 56217577 is about 383.0810841195.

The spelling of 56217577 in words is "fifty-six million, two hundred seventeen thousand, five hundred seventy-seven".