55318664 has 16 divisors (see below), whose sum is σ = 104470800. Its totient is φ = 27459792.

The previous prime is 55318661. The next prime is 55318667. The reversal of 55318664 is 46681355.

It is an interprime number because it is at equal distance from previous prime (55318661) and next prime (55318667).

It is not an unprimeable number, because it can be changed into a prime (55318661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23762 + ... + 25985.

It is an arithmetic number, because the mean of its divisors is an integer number (6529425).

Almost surely, 2^55318664 is an apocalyptic number.

It is an amenable number.

55318664 is a deficient number, since it is larger than the sum of its proper divisors (49152136).

55318664 is a wasteful number, since it uses less digits than its factorization.

55318664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49892 (or 49888 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 55318664 is about 7437.6517799639. The cubic root of 55318664 is about 381.0282952144.

The spelling of 55318664 in words is "fifty-five million, three hundred eighteen thousand, six hundred sixty-four".