55779716 has 12 divisors (see below), whose sum is σ = 97930560. Its totient is φ = 27799560.

The previous prime is 55779709. The next prime is 55779733. The reversal of 55779716 is 61797755.

It is a super-2 number, since 2×55779716² = 6222753434081312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21176 + ... + 23663.

It is an arithmetic number, because the mean of its divisors is an integer number (8160880).

Almost surely, 2^55779716 is an apocalyptic number.

It is an amenable number.

55779716 is a deficient number, since it is larger than the sum of its proper divisors (42150844).

55779716 is a wasteful number, since it uses less digits than its factorization.

55779716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45154 (or 45152 counting only the distinct ones).

The product of its digits is 463050, while the sum is 47.

The square root of 55779716 is about 7468.5819269792. The cubic root of 55779716 is about 382.0839248004.

The spelling of 55779716 in words is "fifty-five million, seven hundred seventy-nine thousand, seven hundred sixteen".