55981370 has 32 divisors (see below), whose sum is σ = 104996736. Its totient is φ = 21470400.

The previous prime is 55981363. The next prime is 55981421. The reversal of 55981370 is 7318955.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25205 + ... + 27335.

It is an arithmetic number, because the mean of its divisors is an integer number (3281148).

Almost surely, 2^55981370 is an apocalyptic number.

55981370 is a deficient number, since it is larger than the sum of its proper divisors (49015366).

55981370 is a wasteful number, since it uses less digits than its factorization.

55981370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 55981370 is about 7482.0699007694. The cubic root of 55981370 is about 382.5438057680.

The spelling of 55981370 in words is "fifty-five million, nine hundred eighty-one thousand, three hundred seventy".