55664605 has 16 divisors (see below), whose sum is σ = 68592960. Its totient is φ = 43350912.

The previous prime is 55664603. The next prime is 55664611. The reversal of 55664605 is 50646655.

It is a cyclic number.

It is not a de Polignac number, because 55664605 - 2¹ = 55664603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55664603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28882 + ... + 30748.

It is an arithmetic number, because the mean of its divisors is an integer number (4287060).

Almost surely, 2^55664605 is an apocalyptic number.

It is an amenable number.

55664605 is a deficient number, since it is larger than the sum of its proper divisors (12928355).

55664605 is a wasteful number, since it uses less digits than its factorization.

55664605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 55664605 is about 7460.8715978765. The cubic root of 55664605 is about 381.8209119144.

The spelling of 55664605 in words is "fifty-five million, six hundred sixty-four thousand, six hundred five".