54815172 has 12 divisors (see below), whose sum is σ = 127902096. Its totient is φ = 18271720.

The previous prime is 54815129. The next prime is 54815213. The reversal of 54815172 is 27151845.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283954 + ... + 2283977.

It is an arithmetic number, because the mean of its divisors is an integer number (10658508).

Almost surely, 2^54815172 is an apocalyptic number.

It is an amenable number.

54815172 is an abundant number, since it is smaller than the sum of its proper divisors (73086924).

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

54815172 is a wasteful number, since it uses less digits than its factorization.

54815172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567938 (or 4567936 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 54815172 is about 7403.7268993393. The cubic root of 54815172 is about 379.8687727858.

The spelling of 54815172 in words is "fifty-four million, eight hundred fifteen thousand, one hundred seventy-two".