55188339 has 16 divisors (see below), whose sum is σ = 79263744. Its totient is φ = 34056000.

The previous prime is 55188311. The next prime is 55188361. The reversal of 55188339 is 93388155.

It is not a de Polignac number, because 55188339 - 2⁸ = 55188083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55188339.

It is not an unprimeable number, because it can be changed into a prime (55188379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10762 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (4953984).

Almost surely, 2^55188339 is an apocalyptic number.

55188339 is a deficient number, since it is larger than the sum of its proper divisors (24075405).

55188339 is a wasteful number, since it uses less digits than its factorization.

55188339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25858.

The product of its digits is 129600, while the sum is 42.

The square root of 55188339 is about 7428.8854480332. The cubic root of 55188339 is about 380.7288389606.

The spelling of 55188339 in words is "fifty-five million, one hundred eighty-eight thousand, three hundred thirty-nine".