251253463 has 2 divisors, whose sum is σ = 251253464. Its totient is φ = 251253462.

The previous prime is 251253461. The next prime is 251253487. The reversal of 251253463 is 364352152.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251253463 - 2¹ = 251253461 is a prime.

Together with 251253461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251253461) 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, 125626731 + 125626732.

It is an arithmetic number, because the mean of its divisors is an integer number (125626732).

Almost surely, 2^251253463 is an apocalyptic number.

251253463 is a deficient number, since it is larger than the sum of its proper divisors (1).

251253463 is an equidigital number, since it uses as much as digits as its factorization.

251253463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 31.

The square root of 251253463 is about 15850.9767206945. The cubic root of 251253463 is about 631.0116131788.

The spelling of 251253463 in words is "two hundred fifty-one million, two hundred fifty-three thousand, four hundred sixty-three".