55787796 has 36 divisors (see below), whose sum is σ = 141365952. Its totient is φ = 18550224.

The previous prime is 55787777. The next prime is 55787803. The reversal of 55787796 is 69778755.

55787796 is a `hidden beast` number, since 557 + 87 + 7 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55787796² = 6224556365075232, which contains 22 as substring.

It is a congruent number.

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, 14995 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (3926832).

Almost surely, 2^55787796 is an apocalyptic number.

It is an amenable number.

55787796 is an abundant number, since it is smaller than the sum of its proper divisors (85578156).

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

55787796 is a wasteful number, since it uses less digits than its factorization.

55787796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820 (or 3815 counting only the distinct ones).

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

The square root of 55787796 is about 7469.1228400663. The cubic root of 55787796 is about 382.1023728987.

The spelling of 55787796 in words is "fifty-five million, seven hundred eighty-seven thousand, seven hundred ninety-six".