556251379 has 2 divisors, whose sum is σ = 556251380. Its totient is φ = 556251378.

The previous prime is 556251361. The next prime is 556251413. The reversal of 556251379 is 973152655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556251379 - 2⁵ = 556251347 is a prime.

It is a super-3 number, since 3×556251379³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (556251779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278125689 + 278125690.

It is an arithmetic number, because the mean of its divisors is an integer number (278125690).

Almost surely, 2^556251379 is an apocalyptic number.

556251379 is a deficient number, since it is larger than the sum of its proper divisors (1).

556251379 is an equidigital number, since it uses as much as digits as its factorization.

556251379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 43.

The square root of 556251379 is about 23584.9820648649. The cubic root of 556251379 is about 822.4137578912.

The spelling of 556251379 in words is "five hundred fifty-six million, two hundred fifty-one thousand, three hundred seventy-nine".