55931776 has 16 divisors (see below), whose sum is σ = 111426840. Its totient is φ = 27965824.

The previous prime is 55931767. The next prime is 55931803. The reversal of 55931776 is 67713955.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218356 + ... + 218611.

Almost surely, 2^55931776 is an apocalyptic number.

It is an amenable number.

55931776 is a deficient number, since it is larger than the sum of its proper divisors (55495064).

55931776 is an equidigital number, since it uses as much as digits as its factorization.

55931776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436981 (or 436969 counting only the distinct ones).

The product of its digits is 198450, while the sum is 43.

The square root of 55931776 is about 7478.7549765987. The cubic root of 55931776 is about 382.4308069693.

The spelling of 55931776 in words is "fifty-five million, nine hundred thirty-one thousand, seven hundred seventy-six".