556131 has 8 divisors (see below), whose sum is σ = 746064. Its totient is φ = 368480.

The previous prime is 556123. The next prime is 556159. The reversal of 556131 is 131655.

It is a happy number.

556131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 556131 - 2³ = 556123 is a prime.

It is a super-2 number, since 2×556131² = 618563378322, which contains 22 as substring.

556131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 556098 and 556107.

It is not an unprimeable number, because it can be changed into a prime (556181) 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, 121 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (93258).

2⁵⁵⁶¹³¹ is an apocalyptic number.

556131 is a deficient number, since it is larger than the sum of its proper divisors (189933).

556131 is a wasteful number, since it uses less digits than its factorization.

556131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 450, while the sum is 21.

The square root of 556131 is about 745.7419124603. The cubic root of 556131 is about 82.2354427109.

Adding to 556131 its reverse (131655), we get a palindrome (687786).

The spelling of 556131 in words is "five hundred fifty-six thousand, one hundred thirty-one".