1253775617 has 2 divisors, whose sum is σ = 1253775618. Its totient is φ = 1253775616.

The previous prime is 1253775569. The next prime is 1253775683. The reversal of 1253775617 is 7165773521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1244960656 + 8814961 = 35284^2 + 2969^2 .

It is an emirp because it is prime and its reverse (7165773521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1253775617 - 2³⁰ = 180033793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253772617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626887808 + 626887809.

It is an arithmetic number, because the mean of its divisors is an integer number (626887809).

Almost surely, 2^1253775617 is an apocalyptic number.

It is an amenable number.

1253775617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253775617 is an equidigital number, since it uses as much as digits as its factorization.

1253775617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308700, while the sum is 44.

The square root of 1253775617 is about 35408.6940877520. The cubic root of 1253775617 is about 1078.3008308918.

The spelling of 1253775617 in words is "one billion, two hundred fifty-three million, seven hundred seventy-five thousand, six hundred seventeen".