427256251 has 2 divisors, whose sum is σ = 427256252. Its totient is φ = 427256250.

The previous prime is 427256233. The next prime is 427256281. The reversal of 427256251 is 152652724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427256251 - 2⁹ = 427255739 is a prime.

It is not a weakly prime, because it can be changed into another prime (427256201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213628125 + 213628126.

It is an arithmetic number, because the mean of its divisors is an integer number (213628126).

Almost surely, 2^427256251 is an apocalyptic number.

427256251 is a deficient number, since it is larger than the sum of its proper divisors (1).

427256251 is an equidigital number, since it uses as much as digits as its factorization.

427256251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 427256251 is about 20670.1778173290. The cubic root of 427256251 is about 753.1754260664.

The spelling of 427256251 in words is "four hundred twenty-seven million, two hundred fifty-six thousand, two hundred fifty-one".