55588554 has 24 divisors (see below), whose sum is σ = 137648160. Its totient is φ = 15882408.

The previous prime is 55588553. The next prime is 55588567. The reversal of 55588554 is 45588555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55588553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220464 + ... + 220715.

It is an arithmetic number, because the mean of its divisors is an integer number (5735340).

Almost surely, 2^55588554 is an apocalyptic number.

55588554 is an abundant number, since it is smaller than the sum of its proper divisors (82059606).

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

55588554 is a wasteful number, since it uses less digits than its factorization.

55588554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441194 (or 441191 counting only the distinct ones).

The product of its digits is 800000, while the sum is 45.

The square root of 55588554 is about 7455.7731993402. The cubic root of 55588554 is about 381.6469468103.

Subtracting from 55588554 its reverse (45588555), we obtain a palindrome (9999999).

The spelling of 55588554 in words is "fifty-five million, five hundred eighty-eight thousand, five hundred fifty-four".