55717916 has 12 divisors (see below), whose sum is σ = 98602560. Its totient is φ = 27545760.

The previous prime is 55717913. The next prime is 55717933. The reversal of 55717916 is 61971755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55717913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77900 + ... + 78611.

It is an arithmetic number, because the mean of its divisors is an integer number (8216880).

Almost surely, 2^55717916 is an apocalyptic number.

It is an amenable number.

55717916 is a deficient number, since it is larger than the sum of its proper divisors (42884644).

55717916 is a wasteful number, since it uses less digits than its factorization.

55717916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156604 (or 156602 counting only the distinct ones).

The product of its digits is 66150, while the sum is 41.

The square root of 55717916 is about 7464.4434487777. The cubic root of 55717916 is about 381.9427652890.

The spelling of 55717916 in words is "fifty-five million, seven hundred seventeen thousand, nine hundred sixteen".