55517888 has 14 divisors (see below), whose sum is σ = 110168436. Its totient is φ = 27758912.

The previous prime is 55517881. The next prime is 55517893. The reversal of 55517888 is 88871555.

It is not an unprimeable number, because it can be changed into a prime (55517881) 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 as a sum of consecutive naturals, namely, 433670 + ... + 433797.

It is an arithmetic number, because the mean of its divisors is an integer number (7869174).

Almost surely, 2^55517888 is an apocalyptic number.

It is an amenable number.

55517888 is a deficient number, since it is larger than the sum of its proper divisors (54650548).

55517888 is an equidigital number, since it uses as much as digits as its factorization.

55517888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867479 (or 867469 counting only the distinct ones).

The product of its digits is 448000, while the sum is 47.

The square root of 55517888 is about 7451.0326801055. The cubic root of 55517888 is about 381.4851575124.

The spelling of 55517888 in words is "fifty-five million, five hundred seventeen thousand, eight hundred eighty-eight".