54481664 has 72 divisors (see below), whose sum is σ = 119696640. Its totient is φ = 24634368.

The previous prime is 54481627. The next prime is 54481681. The reversal of 54481664 is 46618445.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111629 + ... + 112115.

Almost surely, 2^54481664 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 54481664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59848320).

54481664 is an abundant number, since it is smaller than the sum of its proper divisors (65214976).

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

54481664 is a wasteful number, since it uses less digits than its factorization.

54481664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 531 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 54481664 is about 7381.1695550231. The cubic root of 54481664 is about 379.0968023165.

The spelling of 54481664 in words is "fifty-four million, four hundred eighty-one thousand, six hundred sixty-four".