251460047 has 2 divisors, whose sum is σ = 251460048. Its totient is φ = 251460046.

The previous prime is 251460043. The next prime is 251460049. The reversal of 251460047 is 740064152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251460047 - 2² = 251460043 is a prime.

Together with 251460049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251460043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125730023 + 125730024.

It is an arithmetic number, because the mean of its divisors is an integer number (125730024).

Almost surely, 2^251460047 is an apocalyptic number.

251460047 is a deficient number, since it is larger than the sum of its proper divisors (1).

251460047 is an equidigital number, since it uses as much as digits as its factorization.

251460047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 251460047 is about 15857.4918256325. The cubic root of 251460047 is about 631.1845079001.

The spelling of 251460047 in words is "two hundred fifty-one million, four hundred sixty thousand, forty-seven".