70251457 has 2 divisors, whose sum is σ = 70251458. Its totient is φ = 70251456.

The previous prime is 70251451. The next prime is 70251509. The reversal of 70251457 is 75415207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 31013761 = 6264^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 70251457 - 2²³ = 61862849 is a prime.

It is not a weakly prime, because it can be changed into another prime (70251451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35125728 + 35125729.

It is an arithmetic number, because the mean of its divisors is an integer number (35125729).

Almost surely, 2^70251457 is an apocalyptic number.

It is an amenable number.

70251457 is a deficient number, since it is larger than the sum of its proper divisors (1).

70251457 is an equidigital number, since it uses as much as digits as its factorization.

70251457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 70251457 is about 8381.6142240024. The cubic root of 70251457 is about 412.6214288364.

The spelling of 70251457 in words is "seventy million, two hundred fifty-one thousand, four hundred fifty-seven".