251112863 has 2 divisors, whose sum is σ = 251112864. Its totient is φ = 251112862.

The previous prime is 251112859. The next prime is 251112881. The reversal of 251112863 is 368211152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251112863 - 2² = 251112859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251112833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125556431 + 125556432.

It is an arithmetic number, because the mean of its divisors is an integer number (125556432).

Almost surely, 2^251112863 is an apocalyptic number.

251112863 is a deficient number, since it is larger than the sum of its proper divisors (1).

251112863 is an equidigital number, since it uses as much as digits as its factorization.

251112863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 251112863 is about 15846.5410421328. The cubic root of 251112863 is about 630.8938877208.

The spelling of 251112863 in words is "two hundred fifty-one million, one hundred twelve thousand, eight hundred sixty-three".