556612161 has 24 divisors (see below), whose sum is σ = 876445632. Its totient is φ = 307792800.

The previous prime is 556612157. The next prime is 556612207. The reversal of 556612161 is 161216655.

It is not a de Polignac number, because 556612161 - 2² = 556612157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556612151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6391 + ... + 33971.

It is an arithmetic number, because the mean of its divisors is an integer number (36518568).

Almost surely, 2^556612161 is an apocalyptic number.

It is an amenable number.

556612161 is a deficient number, since it is larger than the sum of its proper divisors (319833471).

556612161 is a wasteful number, since it uses less digits than its factorization.

556612161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27653 (or 27622 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 556612161 is about 23592.6293786852. The cubic root of 556612161 is about 822.5915240152.

The spelling of 556612161 in words is "five hundred fifty-six million, six hundred twelve thousand, one hundred sixty-one".