55599570 has 48 divisors (see below), whose sum is σ = 155682072. Its totient is φ = 13685760.

The previous prime is 55599553. The next prime is 55599611. The reversal of 55599570 is 7599555.

55599570 is a `hidden beast` number, since 5 + 5 + 599 + 57 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 45846441 + 9753129 = 6771^2 + 3123^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22591 + ... + 24930.

Almost surely, 2^55599570 is an apocalyptic number.

55599570 is an abundant number, since it is smaller than the sum of its proper divisors (100082502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55599570 is a wasteful number, since it uses less digits than its factorization.

55599570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47547 (or 47544 counting only the distinct ones).

The product of its (nonzero) digits is 354375, while the sum is 45.

The square root of 55599570 is about 7456.5119191214. The cubic root of 55599570 is about 381.6721555076.

It can be divided in two parts, 55599 and 570, that added together give a square (56169 = 237²).

The spelling of 55599570 in words is "fifty-five million, five hundred ninety-nine thousand, five hundred seventy".