556125561 has 16 divisors (see below), whose sum is σ = 825316800. Its totient is φ = 370108224.

The previous prime is 556125529. The next prime is 556125569. The reversal of 556125561 is 165521655.

556125561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556125561 - 2⁵ = 556125529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556125569) 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, 1696 + ... + 33393.

It is an arithmetic number, because the mean of its divisors is an integer number (51582300).

Almost surely, 2^556125561 is an apocalyptic number.

It is an amenable number.

556125561 is a deficient number, since it is larger than the sum of its proper divisors (269191239).

556125561 is a wasteful number, since it uses less digits than its factorization.

556125561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35685 (or 35679 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 556125561 is about 23582.3145810584. The cubic root of 556125561 is about 822.3517462057.

The spelling of 556125561 in words is "five hundred fifty-six million, one hundred twenty-five thousand, five hundred sixty-one".