556877261 has 2 divisors, whose sum is σ = 556877262. Its totient is φ = 556877260.

The previous prime is 556877231. The next prime is 556877303. The reversal of 556877261 is 162778655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350064100 + 206813161 = 18710^2 + 14381^2 .

It is a cyclic number.

It is not a de Polignac number, because 556877261 - 2¹⁰ = 556876237 is a prime.

It is a super-2 number, since 2×556877261² = 620224567637724242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556877231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278438630 + 278438631.

It is an arithmetic number, because the mean of its divisors is an integer number (278438631).

Almost surely, 2^556877261 is an apocalyptic number.

It is an amenable number.

556877261 is a deficient number, since it is larger than the sum of its proper divisors (1).

556877261 is an equidigital number, since it uses as much as digits as its factorization.

556877261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 47.

The square root of 556877261 is about 23598.2469899779. The cubic root of 556877261 is about 822.7220963222.

The spelling of 556877261 in words is "five hundred fifty-six million, eight hundred seventy-seven thousand, two hundred sixty-one".