55709120 has 28 divisors (see below), whose sum is σ = 132658104. Its totient is φ = 22283520.

The previous prime is 55709099. The next prime is 55709131. The reversal of 55709120 is 2190755.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86726 + ... + 87365.

Almost surely, 2^55709120 is an apocalyptic number.

It is an amenable number.

55709120 is an abundant number, since it is smaller than the sum of its proper divisors (76948984).

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

55709120 is a wasteful number, since it uses less digits than its factorization.

55709120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174108 (or 174098 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 55709120 is about 7463.8542322315. The cubic root of 55709120 is about 381.9226655580.

Adding to 55709120 its reverse (2190755), we get a palindrome (57899875).

The spelling of 55709120 in words is "fifty-five million, seven hundred nine thousand, one hundred twenty".