54331992 has 128 divisors (see below), whose sum is σ = 177408000. Its totient is φ = 15189120.

The previous prime is 54331987. The next prime is 54331999. The reversal of 54331992 is 29913345.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54331999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30009 + ... + 31767.

It is an arithmetic number, because the mean of its divisors is an integer number (1386000).

Almost surely, 2^54331992 is an apocalyptic number.

54331992 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54331992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88704000).

54331992 is an abundant number, since it is smaller than the sum of its proper divisors (123076008).

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

54331992 is a wasteful number, since it uses less digits than its factorization.

54331992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1788 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 54331992 is about 7371.0238094854. The cubic root of 54331992 is about 378.7493324172.

The spelling of 54331992 in words is "fifty-four million, three hundred thirty-one thousand, nine hundred ninety-two".