55608399 has 48 divisors (see below), whose sum is σ = 103633920. Its totient is φ = 27881280.

The previous prime is 55608367. The next prime is 55608409. The reversal of 55608399 is 99380655.

55608399 is a `hidden beast` number, since 5 + 5 + 608 + 39 + 9 = 666.

It is not a de Polignac number, because 55608399 - 2⁵ = 55608367 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55608599) 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 in 47 ways as a sum of consecutive naturals, for example, 18714 + ... + 21480.

It is an arithmetic number, because the mean of its divisors is an integer number (2159040).

Almost surely, 2^55608399 is an apocalyptic number.

55608399 is a deficient number, since it is larger than the sum of its proper divisors (48025521).

55608399 is a wasteful number, since it uses less digits than its factorization.

55608399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 55608399 is about 7457.1039284698. The cubic root of 55608399 is about 381.6923571333.

The spelling of 55608399 in words is "fifty-five million, six hundred eight thousand, three hundred ninety-nine".