1279085251 has 2 divisors, whose sum is σ = 1279085252. Its totient is φ = 1279085250.

The previous prime is 1279085233. The next prime is 1279085261. The reversal of 1279085251 is 1525809721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1279085251 - 2¹⁵ = 1279052483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1279085221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639542625 + 639542626.

It is an arithmetic number, because the mean of its divisors is an integer number (639542626).

Almost surely, 2^1279085251 is an apocalyptic number.

1279085251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279085251 is an equidigital number, since it uses as much as digits as its factorization.

1279085251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1279085251 is about 35764.3013492505. The cubic root of 1279085251 is about 1085.5083380413.

The spelling of 1279085251 in words is "one billion, two hundred seventy-nine million, eighty-five thousand, two hundred fifty-one".