55238832 has 120 divisors (see below), whose sum is σ = 172780608. Its totient is φ = 16329600.

The previous prime is 55238803. The next prime is 55238837. The reversal of 55238832 is 23883255.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55238837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67707 + ... + 68517.

Almost surely, 2^55238832 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 55238832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86390304).

55238832 is an abundant number, since it is smaller than the sum of its proper divisors (117541776).

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

55238832 is a wasteful number, since it uses less digits than its factorization.

55238832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 870 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 55238832 is about 7432.2830947159. The cubic root of 55238832 is about 380.8449159057.

The spelling of 55238832 in words is "fifty-five million, two hundred thirty-eight thousand, eight hundred thirty-two".