55233612 has 72 divisors (see below), whose sum is σ = 168962976. Its totient is φ = 14851584.

The previous prime is 55233593. The next prime is 55233623. The reversal of 55233612 is 21633255.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2163 + ... + 10730.

It is an arithmetic number, because the mean of its divisors is an integer number (2346708).

Almost surely, 2^55233612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55233612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84481488).

55233612 is an abundant number, since it is smaller than the sum of its proper divisors (113729364).

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

55233612 is a wasteful number, since it uses less digits than its factorization.

55233612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927 (or 12922 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 55233612 is about 7431.9319157269. The cubic root of 55233612 is about 380.8329190729.

Adding to 55233612 its reverse (21633255), we get a palindrome (76866867).

It can be divided in two parts, 55233 and 612, that multiplied together give a square (33802596 = 5814²).

The spelling of 55233612 in words is "fifty-five million, two hundred thirty-three thousand, six hundred twelve".