1251264059 has 2 divisors, whose sum is σ = 1251264060. Its totient is φ = 1251264058.

The previous prime is 1251264043. The next prime is 1251264097. The reversal of 1251264059 is 9504621521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251264059 - 2⁴ = 1251264043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251264559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625632029 + 625632030.

It is an arithmetic number, because the mean of its divisors is an integer number (625632030).

Almost surely, 2^1251264059 is an apocalyptic number.

1251264059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251264059 is an equidigital number, since it uses as much as digits as its factorization.

1251264059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1251264059 is about 35373.2110360369. The cubic root of 1251264059 is about 1077.5803336943.

The spelling of 1251264059 in words is "one billion, two hundred fifty-one million, two hundred sixty-four thousand, fifty-nine".