55613185 has 8 divisors (see below), whose sum is σ = 66845376. Its totient is φ = 44417520.

The previous prime is 55613167. The next prime is 55613197. The reversal of 55613185 is 58131655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55613185 - 2¹¹ = 55611137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55613185.

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, 5659 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (8355672).

Almost surely, 2^55613185 is an apocalyptic number.

It is an amenable number.

55613185 is a deficient number, since it is larger than the sum of its proper divisors (11232191).

55613185 is a wasteful number, since it uses less digits than its factorization.

55613185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18263.

The product of its digits is 18000, while the sum is 34.

The square root of 55613185 is about 7457.4248236238. The cubic root of 55613185 is about 381.7033070812.

The spelling of 55613185 in words is "fifty-five million, six hundred thirteen thousand, one hundred eighty-five".