54538440 has 128 divisors (see below), whose sum is σ = 181094400. Its totient is φ = 13029120.

The previous prime is 54538439. The next prime is 54538459. The reversal of 54538440 is 4483545.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104019 + ... + 104541.

It is an arithmetic number, because the mean of its divisors is an integer number (1414800).

Almost surely, 2^54538440 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 54538440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90547200).

54538440 is an abundant number, since it is smaller than the sum of its proper divisors (126555960).

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

54538440 is a wasteful number, since it uses less digits than its factorization.

54538440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 54538440 is about 7385.0145565192. The cubic root of 54538440 is about 379.2284437173.

The spelling of 54538440 in words is "fifty-four million, five hundred thirty-eight thousand, four hundred forty".