56777770 has 24 divisors (see below), whose sum is σ = 118886724. Its totient is φ = 19466496.

The previous prime is 56777761. The next prime is 56777801. The reversal of 56777770 is 7777765.

It can be written as a sum of positive squares in 2 ways, for example, as 54952569 + 1825201 = 7413^2 + 1351^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56777770.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57447 + ... + 58426.

Almost surely, 2^56777770 is an apocalyptic number.

56777770 is an abundant number, since it is smaller than the sum of its proper divisors (62108954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56777770 is a wasteful number, since it uses less digits than its factorization.

56777770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115894 (or 115887 counting only the distinct ones).

The product of its (nonzero) digits is 504210, while the sum is 46.

The square root of 56777770 is about 7535.1025208686. The cubic root of 56777770 is about 384.3493141229.

The spelling of 56777770 in words is "fifty-six million, seven hundred seventy-seven thousand, seven hundred seventy".