253120409 has 2 divisors, whose sum is σ = 253120410. Its totient is φ = 253120408.

The previous prime is 253120393. The next prime is 253120447. The reversal of 253120409 is 904021352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249734809 + 3385600 = 15803^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 253120409 - 2⁴ = 253120393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253120459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126560204 + 126560205.

It is an arithmetic number, because the mean of its divisors is an integer number (126560205).

Almost surely, 2^253120409 is an apocalyptic number.

It is an amenable number.

253120409 is a deficient number, since it is larger than the sum of its proper divisors (1).

253120409 is an equidigital number, since it uses as much as digits as its factorization.

253120409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 253120409 is about 15909.7582948328. The cubic root of 253120409 is about 632.5706745588.

The spelling of 253120409 in words is "two hundred fifty-three million, one hundred twenty thousand, four hundred nine".