55312264 has 32 divisors (see below), whose sum is σ = 120542400. Its totient is φ = 23302080.

The previous prime is 55312189. The next prime is 55312267. The reversal of 55312264 is 46221355.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (55312267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5067 + ... + 11674.

It is an arithmetic number, because the mean of its divisors is an integer number (3766950).

Almost surely, 2^55312264 is an apocalyptic number.

It is an amenable number.

55312264 is an abundant number, since it is smaller than the sum of its proper divisors (65230136).

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

55312264 is a wasteful number, since it uses less digits than its factorization.

55312264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813 (or 16809 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 55312264 is about 7437.2215241984. The cubic root of 55312264 is about 381.0136005047.

Subtracting from 55312264 its reverse (46221355), we obtain a palindrome (9090909).

The spelling of 55312264 in words is "fifty-five million, three hundred twelve thousand, two hundred sixty-four".