251416463 has 4 divisors (see below), whose sum is σ = 251468568. Its totient is φ = 251364360.

The previous prime is 251416447. The next prime is 251416483. The reversal of 251416463 is 364614152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 251416463 - 2⁴ = 251416447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251416483) 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 in 3 ways as a sum of consecutive naturals, for example, 17981 + ... + 28742.

It is an arithmetic number, because the mean of its divisors is an integer number (62867142).

Almost surely, 2^251416463 is an apocalyptic number.

251416463 is a deficient number, since it is larger than the sum of its proper divisors (52105).

251416463 is an equidigital number, since it uses as much as digits as its factorization.

251416463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52104.

The product of its digits is 17280, while the sum is 32.

The square root of 251416463 is about 15856.1175260528. The cubic root of 251416463 is about 631.1480393697.

The spelling of 251416463 in words is "two hundred fifty-one million, four hundred sixteen thousand, four hundred sixty-three".