1217252579 has 2 divisors, whose sum is σ = 1217252580. Its totient is φ = 1217252578.

The previous prime is 1217252563. The next prime is 1217252593. The reversal of 1217252579 is 9752527121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217252579 - 2⁴ = 1217252563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217252549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608626289 + 608626290.

It is an arithmetic number, because the mean of its divisors is an integer number (608626290).

Almost surely, 2^1217252579 is an apocalyptic number.

1217252579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217252579 is an equidigital number, since it uses as much as digits as its factorization.

1217252579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 41.

The square root of 1217252579 is about 34889.1470087762. The cubic root of 1217252579 is about 1067.7270231820.

The spelling of 1217252579 in words is "one billion, two hundred seventeen million, two hundred fifty-two thousand, five hundred seventy-nine".