55636659 has 48 divisors (see below), whose sum is σ = 90914400. Its totient is φ = 33606144.

The previous prime is 55636649. The next prime is 55636663. The reversal of 55636659 is 95663655.

55636659 is a `hidden beast` number, since 5 + 5 + 636 + 6 + 5 + 9 = 666.

It is not a de Polignac number, because 55636659 - 2¹⁶ = 55571123 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (55636639) by changing a digit.

It is a Kaprekar number, because its square (3095437824682281) can be partitioned into two parts whose sum is 55636659.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 406039 + ... + 406175.

It is an arithmetic number, because the mean of its divisors is an integer number (1894050).

Almost surely, 2^55636659 is an apocalyptic number.

55636659 is a deficient number, since it is larger than the sum of its proper divisors (35277741).

55636659 is a wasteful number, since it uses less digits than its factorization.

55636659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 242 counting only the distinct ones).

The product of its digits is 729000, while the sum is 45.

The square root of 55636659 is about 7458.9985252713. The cubic root of 55636659 is about 381.7570044376.

The spelling of 55636659 in words is "fifty-five million, six hundred thirty-six thousand, six hundred fifty-nine".