556325121 has 16 divisors (see below), whose sum is σ = 815028480. Its totient is φ = 334738320.

The previous prime is 556325117. The next prime is 556325129. The reversal of 556325121 is 121523655.

It is a happy number.

It is not a de Polignac number, because 556325121 - 2² = 556325117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (556325129) 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, 56055 + ... + 65228.

It is an arithmetic number, because the mean of its divisors is an integer number (50939280).

Almost surely, 2^556325121 is an apocalyptic number.

It is an amenable number.

556325121 is a deficient number, since it is larger than the sum of its proper divisors (258703359).

556325121 is a wasteful number, since it uses less digits than its factorization.

556325121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121436.

The product of its digits is 9000, while the sum is 30.

The square root of 556325121 is about 23586.5453383915. The cubic root of 556325121 is about 822.4500986284.

Adding to 556325121 its reverse (121523655), we get a palindrome (677848776).

The spelling of 556325121 in words is "five hundred fifty-six million, three hundred twenty-five thousand, one hundred twenty-one".