55480872 has 32 divisors (see below), whose sum is σ = 142087680. Its totient is φ = 18042240.

The previous prime is 55480861. The next prime is 55480883. The reversal of 55480872 is 27808455.

It is an interprime number because it is at equal distance from previous prime (55480861) and next prime (55480883).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55480872.

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 7 ways as a sum of consecutive naturals, for example, 27208 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (4440240).

Almost surely, 2^55480872 is an apocalyptic number.

It is an amenable number.

55480872 is an abundant number, since it is smaller than the sum of its proper divisors (86606808).

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

55480872 is a wasteful number, since it uses less digits than its factorization.

55480872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56433 (or 56429 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 55480872 is about 7448.5483149403. The cubic root of 55480872 is about 381.4003548502.

The spelling of 55480872 in words is "fifty-five million, four hundred eighty thousand, eight hundred seventy-two".