55789980 has 48 divisors (see below), whose sum is σ = 156549120. Its totient is φ = 14845248.

The previous prime is 55789967. The next prime is 55790003. The reversal of 55789980 is 8998755.

55789980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55789980² = 6225043736800800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42981 + ... + 44259.

It is an arithmetic number, because the mean of its divisors is an integer number (3261440).

Almost surely, 2^55789980 is an apocalyptic number.

It is an amenable number.

55789980 is an abundant number, since it is smaller than the sum of its proper divisors (100759140).

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

55789980 is a wasteful number, since it uses less digits than its factorization.

55789980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 51.

The square root of 55789980 is about 7469.2690405421. The cubic root of 55789980 is about 382.1073590591.

The spelling of 55789980 in words is "fifty-five million, seven hundred eighty-nine thousand, nine hundred eighty".