54721392 has 80 divisors (see below), whose sum is σ = 156835200. Its totient is φ = 16300800.

The previous prime is 54721369. The next prime is 54721397. The reversal of 54721392 is 29312745.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54721397) 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, 31359 + ... + 33057.

It is an arithmetic number, because the mean of its divisors is an integer number (1960440).

Almost surely, 2^54721392 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 54721392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78417600).

54721392 is an abundant number, since it is smaller than the sum of its proper divisors (102113808).

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

54721392 is a wasteful number, since it uses less digits than its factorization.

54721392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782 (or 1776 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 54721392 is about 7397.3908913887. The cubic root of 54721392 is about 379.6520175381.

The spelling of 54721392 in words is "fifty-four million, seven hundred twenty-one thousand, three hundred ninety-two".