55880660 has 24 divisors (see below), whose sum is σ = 128018016. Its totient is φ = 20320160.

The previous prime is 55880659. The next prime is 55880677. The reversal of 55880660 is 6608855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126782 + ... + 127221.

It is an arithmetic number, because the mean of its divisors is an integer number (5334084).

Almost surely, 2^55880660 is an apocalyptic number.

It is an amenable number.

55880660 is an abundant number, since it is smaller than the sum of its proper divisors (72137356).

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

55880660 is a wasteful number, since it uses less digits than its factorization.

55880660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254023 (or 254021 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 55880660 is about 7475.3367817109. The cubic root of 55880660 is about 382.3142704039.

It can be divided in two parts, 558 and 80660, that added together give a palindrome (81218).

The spelling of 55880660 in words is "fifty-five million, eight hundred eighty thousand, six hundred sixty".