55777896 has 40 divisors (see below), whose sum is σ = 156231570. Its totient is φ = 18592416.

The previous prime is 55777879. The next prime is 55777903. The reversal of 55777896 is 69877755.

55777896 is a `hidden beast` number, since 557 + 7 + 7 + 89 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 5225796 = 7110^2 + 2286^2 .

It is a super-2 number, since 2×55777896² = 6222347364373632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42391 + ... + 43686.

Almost surely, 2^55777896 is an apocalyptic number.

It is an amenable number.

55777896 is an abundant number, since it is smaller than the sum of its proper divisors (100453674).

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

55777896 is a wasteful number, since it uses less digits than its factorization.

55777896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86095 (or 86082 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 55777896 is about 7468.4600822392. The cubic root of 55777896 is about 382.0797691660.

The spelling of 55777896 in words is "fifty-five million, seven hundred seventy-seven thousand, eight hundred ninety-six".