54387720 has 64 divisors (see below), whose sum is σ = 181296000. Its totient is φ = 14503104.

The previous prime is 54387713. The next prime is 54387737. The reversal of 54387720 is 2778345.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24100 + ... + 26259.

It is an arithmetic number, because the mean of its divisors is an integer number (2832750).

Almost surely, 2^54387720 is an apocalyptic number.

It is an amenable number.

54387720 is an abundant number, since it is smaller than the sum of its proper divisors (126908280).

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

54387720 is a wasteful number, since it uses less digits than its factorization.

54387720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50379 (or 50369 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 54387720 is about 7374.8030482176. The cubic root of 54387720 is about 378.8787818122.

The spelling of 54387720 in words is "fifty-four million, three hundred eighty-seven thousand, seven hundred twenty".