55588831 has 4 divisors (see below), whose sum is σ = 55880064. Its totient is φ = 55297600.

The previous prime is 55588823. The next prime is 55588867. The reversal of 55588831 is 13888555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55588831 - 2³ = 55588823 is a prime.

It is a super-2 number, since 2×55588831² = 6180236263893122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55588031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145330 + ... + 145711.

It is an arithmetic number, because the mean of its divisors is an integer number (13970016).

Almost surely, 2^55588831 is an apocalyptic number.

55588831 is a deficient number, since it is larger than the sum of its proper divisors (291233).

55588831 is a wasteful number, since it uses less digits than its factorization.

55588831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291232.

The product of its digits is 192000, while the sum is 43.

The square root of 55588831 is about 7455.7917755259. The cubic root of 55588831 is about 381.6475807300.

The spelling of 55588831 in words is "fifty-five million, five hundred eighty-eight thousand, eight hundred thirty-one".