556241251 has 2 divisors, whose sum is σ = 556241252. Its totient is φ = 556241250.

The previous prime is 556241243. The next prime is 556241281. The reversal of 556241251 is 152142655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556241251 - 2³ = 556241243 is a prime.

It is not a weakly prime, because it can be changed into another prime (556241221) 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, 278120625 + 278120626.

It is an arithmetic number, because the mean of its divisors is an integer number (278120626).

Almost surely, 2^556241251 is an apocalyptic number.

556241251 is a deficient number, since it is larger than the sum of its proper divisors (1).

556241251 is an equidigital number, since it uses as much as digits as its factorization.

556241251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 556241251 is about 23584.7673509831. The cubic root of 556241251 is about 822.4087664686.

The spelling of 556241251 in words is "five hundred fifty-six million, two hundred forty-one thousand, two hundred fifty-one".