55216488 has 32 divisors (see below), whose sum is σ = 138823200. Its totient is φ = 18301248.

The previous prime is 55216477. The next prime is 55216501. The reversal of 55216488 is 88461255.

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, 2131 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (4338225).

Almost surely, 2^55216488 is an apocalyptic number.

It is an amenable number.

55216488 is an abundant number, since it is smaller than the sum of its proper divisors (83606712).

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

55216488 is a wasteful number, since it uses less digits than its factorization.

55216488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13041 (or 13037 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 55216488 is about 7430.7797706566. The cubic root of 55216488 is about 380.7935586381.

The spelling of 55216488 in words is "fifty-five million, two hundred sixteen thousand, four hundred eighty-eight".