55871233 has 24 divisors (see below), whose sum is σ = 64876896. Its totient is φ = 47678400.

The previous prime is 55871183. The next prime is 55871239. The reversal of 55871233 is 33217855.

It is not a de Polignac number, because 55871233 - 2²¹ = 53774081 is a prime.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55871239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 833866 + ... + 833932.

It is an arithmetic number, because the mean of its divisors is an integer number (2703204).

Almost surely, 2^55871233 is an apocalyptic number.

It is an amenable number.

55871233 is a deficient number, since it is larger than the sum of its proper divisors (9005663).

55871233 is a wasteful number, since it uses less digits than its factorization.

55871233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 162 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 55871233 is about 7474.7062149626. The cubic root of 55871233 is about 382.2927705426.

The spelling of 55871233 in words is "fifty-five million, eight hundred seventy-one thousand, two hundred thirty-three".