55494732 has 48 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 17309952.

The previous prime is 55494731. The next prime is 55494737. The reversal of 55494732 is 23749455.

It is not an unprimeable number, because it can be changed into a prime (55494731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39913 + ... + 41279.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^55494732 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 55494732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

55494732 is an abundant number, since it is smaller than the sum of its proper divisors (82399668).

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

55494732 is a wasteful number, since it uses less digits than its factorization.

55494732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1588 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 55494732 is about 7449.4786394754. The cubic root of 55494732 is about 381.4321121543.

The spelling of 55494732 in words is "fifty-five million, four hundred ninety-four thousand, seven hundred thirty-two".