55500872 has 32 divisors (see below), whose sum is σ = 119387520. Its totient is φ = 23694720.

The previous prime is 55500859. The next prime is 55500877. The reversal of 55500872 is 27800555.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55500877) by changing a digit.

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, 13973 + ... + 17499.

It is an arithmetic number, because the mean of its divisors is an integer number (3730860).

Almost surely, 2^55500872 is an apocalyptic number.

It is an amenable number.

55500872 is an abundant number, since it is smaller than the sum of its proper divisors (63886648).

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

55500872 is a wasteful number, since it uses less digits than its factorization.

55500872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 55500872 is about 7449.8907374538. The cubic root of 55500872 is about 381.4461789959.

The spelling of 55500872 in words is "fifty-five million, five hundred thousand, eight hundred seventy-two".