55117230 has 64 divisors (see below), whose sum is σ = 160081920. Its totient is φ = 11856384.

The previous prime is 55117217. The next prime is 55117277. The reversal of 55117230 is 3271155.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55117230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4150 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (2501280).

Almost surely, 2^55117230 is an apocalyptic number.

55117230 is an abundant number, since it is smaller than the sum of its proper divisors (104964690).

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

55117230 is a wasteful number, since it uses less digits than its factorization.

55117230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15473.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 55117230 is about 7424.0979250007. The cubic root of 55117230 is about 380.5652483447.

Adding to 55117230 its reverse (3271155), we get a palindrome (58388385).

The spelling of 55117230 in words is "fifty-five million, one hundred seventeen thousand, two hundred thirty".