55979130 has 128 divisors (see below), whose sum is σ = 153964800. Its totient is φ = 12939264.

The previous prime is 55979123. The next prime is 55979153. The reversal of 55979130 is 3197955.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 513516 + ... + 513624.

It is an arithmetic number, because the mean of its divisors is an integer number (1202850).

Almost surely, 2^55979130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55979130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76982400).

55979130 is an abundant number, since it is smaller than the sum of its proper divisors (97985670).

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

55979130 is a wasteful number, since it uses less digits than its factorization.

55979130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208.

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 55979130 is about 7481.9202080749. The cubic root of 55979130 is about 382.5387034184.

The spelling of 55979130 in words is "fifty-five million, nine hundred seventy-nine thousand, one hundred thirty".