55195518 has 16 divisors (see below), whose sum is σ = 126161280. Its totient is φ = 15770136.

The previous prime is 55195501. The next prime is 55195559. The reversal of 55195518 is 81559155.

It is a congruent number.

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, 657048 + ... + 657131.

It is an arithmetic number, because the mean of its divisors is an integer number (7885080).

Almost surely, 2^55195518 is an apocalyptic number.

55195518 is an abundant number, since it is smaller than the sum of its proper divisors (70965762).

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

55195518 is a wasteful number, since it uses less digits than its factorization.

55195518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314191.

The product of its digits is 45000, while the sum is 39.

The square root of 55195518 is about 7429.3686138191. The cubic root of 55195518 is about 380.7453468792.

It can be divided in two parts, 551 and 95518, that added together give a palindrome (96069).

The spelling of 55195518 in words is "fifty-five million, one hundred ninety-five thousand, five hundred eighteen".