55664338 has 32 divisors (see below), whose sum is σ = 90288000. Its totient is φ = 25660800.

The previous prime is 55664327. The next prime is 55664339. The reversal of 55664338 is 83346655.

It is a self number, because there is not a number n which added to its sum of digits gives 55664338.

It is not an unprimeable number, because it can be changed into a prime (55664339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368563 + ... + 368713.

It is an arithmetic number, because the mean of its divisors is an integer number (2821500).

Almost surely, 2^55664338 is an apocalyptic number.

55664338 is a deficient number, since it is larger than the sum of its proper divisors (34623662).

55664338 is a wasteful number, since it uses less digits than its factorization.

55664338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its digits is 259200, while the sum is 40.

The square root of 55664338 is about 7460.8537045033. The cubic root of 55664338 is about 381.8203014347.

The spelling of 55664338 in words is "fifty-five million, six hundred sixty-four thousand, three hundred thirty-eight".