556113181 has 8 divisors (see below), whose sum is σ = 599806424. Its totient is φ = 512550720.

The previous prime is 556113179. The next prime is 556113191. The reversal of 556113181 is 181311655.

It can be written as a sum of positive squares in 4 ways, for example, as 28676025 + 527437156 = 5355^2 + 22966^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 556113181 - 2¹ = 556113179 is a prime.

It is a super-2 number, since 2×556113181² = 618523740163877522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556113101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23766 + ... + 40951.

It is an arithmetic number, because the mean of its divisors is an integer number (74975803).

Almost surely, 2^556113181 is an apocalyptic number.

It is an amenable number.

556113181 is a deficient number, since it is larger than the sum of its proper divisors (43693243).

556113181 is a wasteful number, since it uses less digits than its factorization.

556113181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65391.

The product of its digits is 3600, while the sum is 31.

The square root of 556113181 is about 23582.0520947605. The cubic root of 556113181 is about 822.3456439925.

The spelling of 556113181 in words is "five hundred fifty-six million, one hundred thirteen thousand, one hundred eighty-one".