556981133 has 4 divisors (see below), whose sum is σ = 581197728. Its totient is φ = 532764540.

The previous prime is 556981127. The next prime is 556981157. The reversal of 556981133 is 331189655.

556981133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 556981133 - 2⁶ = 556981069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556981933) 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, 12108263 + ... + 12108308.

It is an arithmetic number, because the mean of its divisors is an integer number (145299432).

Almost surely, 2^556981133 is an apocalyptic number.

It is an amenable number.

556981133 is a deficient number, since it is larger than the sum of its proper divisors (24216595).

556981133 is a wasteful number, since it uses less digits than its factorization.

556981133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24216594.

The product of its digits is 97200, while the sum is 41.

The square root of 556981133 is about 23600.4477288038. The cubic root of 556981133 is about 822.7732461193.

The spelling of 556981133 in words is "five hundred fifty-six million, nine hundred eighty-one thousand, one hundred thirty-three".