556698281 has 2 divisors, whose sum is σ = 556698282. Its totient is φ = 556698280.

The previous prime is 556698251. The next prime is 556698283. The reversal of 556698281 is 182896655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547794025 + 8904256 = 23405^2 + 2984^2 .

It is a cyclic number.

It is not a de Polignac number, because 556698281 - 2²² = 552503977 is a prime.

It is a super-2 number, since 2×556698281² = 619825952136709922, which contains 22 as substring.

Together with 556698283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556698283) 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, 278349140 + 278349141.

It is an arithmetic number, because the mean of its divisors is an integer number (278349141).

Almost surely, 2^556698281 is an apocalyptic number.

It is an amenable number.

556698281 is a deficient number, since it is larger than the sum of its proper divisors (1).

556698281 is an equidigital number, since it uses as much as digits as its factorization.

556698281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 50.

The square root of 556698281 is about 23594.4544543840. The cubic root of 556698281 is about 822.6339460903.

The spelling of 556698281 in words is "five hundred fifty-six million, six hundred ninety-eight thousand, two hundred eighty-one".