54815120 has 40 divisors (see below), whose sum is σ = 127860864. Its totient is φ = 21854592.

The previous prime is 54815087. The next prime is 54815129. The reversal of 54815120 is 2151845.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×54815120² = 6009394761228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54815120.

It is not an unprimeable number, because it can be changed into a prime (54815129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28427 + ... + 30293.

Almost surely, 2^54815120 is an apocalyptic number.

It is an amenable number.

54815120 is an abundant number, since it is smaller than the sum of its proper divisors (73045744).

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

54815120 is a wasteful number, since it uses less digits than its factorization.

54815120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 54815120 is about 7403.7233875936. The cubic root of 54815120 is about 379.8686526659.

Adding to 54815120 its reverse (2151845), we get a palindrome (56966965).

It can be divided in two parts, 5481 and 5120, that added together give a palindrome (10601).

The spelling of 54815120 in words is "fifty-four million, eight hundred fifteen thousand, one hundred twenty".