56776557 has 8 divisors (see below), whose sum is σ = 75737376. Its totient is φ = 37833392.

The previous prime is 56776523. The next prime is 56776561. The reversal of 56776557 is 75567765.

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 56776557 - 2¹⁶ = 56711021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56776507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8458 + ... + 13604.

It is an arithmetic number, because the mean of its divisors is an integer number (9467172).

Almost surely, 2^56776557 is an apocalyptic number.

It is an amenable number.

56776557 is a deficient number, since it is larger than the sum of its proper divisors (18960819).

56776557 is a wasteful number, since it uses less digits than its factorization.

56776557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827.

The product of its digits is 1543500, while the sum is 48.

The square root of 56776557 is about 7535.0220304920. The cubic root of 56776557 is about 384.3465770245.

The spelling of 56776557 in words is "fifty-six million, seven hundred seventy-six thousand, five hundred fifty-seven".