556342261 has 2 divisors, whose sum is σ = 556342262. Its totient is φ = 556342260.

The previous prime is 556342231. The next prime is 556342307. The reversal of 556342261 is 162243655.

556342261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554602500 + 1739761 = 23550^2 + 1319^2 .

It is a cyclic number.

It is not a de Polignac number, because 556342261 - 2⁵ = 556342229 is a prime.

It is a super-2 number, since 2×556342261² = 619033422749184242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556342231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278171130 + 278171131.

It is an arithmetic number, because the mean of its divisors is an integer number (278171131).

Almost surely, 2^556342261 is an apocalyptic number.

It is an amenable number.

556342261 is a deficient number, since it is larger than the sum of its proper divisors (1).

556342261 is an equidigital number, since it uses as much as digits as its factorization.

556342261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 556342261 is about 23586.9086783326. The cubic root of 556342261 is about 822.4585449184.

The spelling of 556342261 in words is "five hundred fifty-six million, three hundred forty-two thousand, two hundred sixty-one".