56577887 has 4 divisors (see below), whose sum is σ = 59906016. Its totient is φ = 53249760.

The previous prime is 56577823. The next prime is 56577931. The reversal of 56577887 is 78877565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56577887 - 2⁶ = 56577823 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 (56577817) 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 3 ways as a sum of consecutive naturals, for example, 1664039 + ... + 1664072.

It is an arithmetic number, because the mean of its divisors is an integer number (14976504).

Almost surely, 2^56577887 is an apocalyptic number.

56577887 is a deficient number, since it is larger than the sum of its proper divisors (3328129).

56577887 is a wasteful number, since it uses less digits than its factorization.

56577887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328128.

The product of its digits is 3292800, while the sum is 53.

The square root of 56577887 is about 7521.8273710582. The cubic root of 56577887 is about 383.8977569772.

The spelling of 56577887 in words is "fifty-six million, five hundred seventy-seven thousand, eight hundred eighty-seven".