54815520 has 48 divisors (see below), whose sum is σ = 172670400. Its totient is φ = 14617344.

The previous prime is 54815507. The next prime is 54815557. The reversal of 54815520 is 2551845.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 56620 + ... + 57579.

It is an arithmetic number, because the mean of its divisors is an integer number (3597300).

Almost surely, 2^54815520 is an apocalyptic number.

It is an amenable number.

54815520 is an abundant number, since it is smaller than the sum of its proper divisors (117854880).

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

54815520 is a wasteful number, since it uses less digits than its factorization.

54815520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114217 (or 114209 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 54815520 is about 7403.7504009792. The cubic root of 54815520 is about 379.8695766633.

The spelling of 54815520 in words is "fifty-four million, eight hundred fifteen thousand, five hundred twenty".