55691180 has 24 divisors (see below), whose sum is σ = 117091968. Its totient is φ = 22249728.

The previous prime is 55691177. The next prime is 55691213. The reversal of 55691180 is 8119655.

It is a self number, because there is not a number n which added to its sum of digits gives 55691180.

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, 30452 + ... + 32228.

It is an arithmetic number, because the mean of its divisors is an integer number (4878832).

Almost surely, 2^55691180 is an apocalyptic number.

It is an amenable number.

55691180 is an abundant number, since it is smaller than the sum of its proper divisors (61400788).

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

55691180 is a wasteful number, since it uses less digits than its factorization.

55691180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 55691180 is about 7462.6523435036. The cubic root of 55691180 is about 381.8816643226.

The spelling of 55691180 in words is "fifty-five million, six hundred ninety-one thousand, one hundred eighty".