55288918 has 16 divisors (see below), whose sum is σ = 87171840. Its totient is φ = 26249256.

The previous prime is 55288867. The next prime is 55288949. The reversal of 55288918 is 81988255.

55288918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55288918² = 6113728907221448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2071 + ... + 10717.

It is an arithmetic number, because the mean of its divisors is an integer number (5448240).

Almost surely, 2^55288918 is an apocalyptic number.

55288918 is a deficient number, since it is larger than the sum of its proper divisors (31882922).

55288918 is a wasteful number, since it uses less digits than its factorization.

55288918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811.

The product of its digits is 230400, while the sum is 46.

The square root of 55288918 is about 7435.6518207888. The cubic root of 55288918 is about 380.9599873476.

The spelling of 55288918 in words is "fifty-five million, two hundred eighty-eight thousand, nine hundred eighteen".