553565873 has 4 divisors (see below), whose sum is σ = 632646720. Its totient is φ = 474485028.

The previous prime is 553565821. The next prime is 553565879. The reversal of 553565873 is 378565355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 553565873 - 2²⁰ = 552517297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553565879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39540413 + ... + 39540426.

It is an arithmetic number, because the mean of its divisors is an integer number (158161680).

Almost surely, 2^553565873 is an apocalyptic number.

It is an amenable number.

553565873 is a deficient number, since it is larger than the sum of its proper divisors (79080847).

553565873 is an equidigital number, since it uses as much as digits as its factorization.

553565873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79080846.

The product of its digits is 1890000, while the sum is 47.

The square root of 553565873 is about 23527.9806400804. The cubic root of 553565873 is about 821.0881216786.

The spelling of 553565873 in words is "five hundred fifty-three million, five hundred sixty-five thousand, eight hundred seventy-three".