55565279 has 16 divisors (see below), whose sum is σ = 69653760. Its totient is φ = 43061760.

The previous prime is 55565269. The next prime is 55565297. The reversal of 55565279 is 97256555.

It is not a de Polignac number, because 55565279 - 2⁸ = 55565023 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565219) 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, 12992 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (4353360).

Almost surely, 2^55565279 is an apocalyptic number.

55565279 is a deficient number, since it is larger than the sum of its proper divisors (14088481).

55565279 is a wasteful number, since it uses less digits than its factorization.

55565279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950.

The product of its digits is 472500, while the sum is 44.

The square root of 55565279 is about 7454.2121649441. The cubic root of 55565279 is about 381.5936740165.

The spelling of 55565279 in words is "fifty-five million, five hundred sixty-five thousand, two hundred seventy-nine".