1253345539 has 2 divisors, whose sum is σ = 1253345540. Its totient is φ = 1253345538.

The previous prime is 1253345497. The next prime is 1253345543. The reversal of 1253345539 is 9355433521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1253345539 - 2⁷ = 1253345411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253345549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626672769 + 626672770.

It is an arithmetic number, because the mean of its divisors is an integer number (626672770).

Almost surely, 2^1253345539 is an apocalyptic number.

1253345539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253345539 is an equidigital number, since it uses as much as digits as its factorization.

1253345539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 40.

The square root of 1253345539 is about 35402.6205103521. The cubic root of 1253345539 is about 1078.1775216130.

The spelling of 1253345539 in words is "one billion, two hundred fifty-three million, three hundred forty-five thousand, five hundred thirty-nine".