253717291 has 2 divisors, whose sum is σ = 253717292. Its totient is φ = 253717290.

The previous prime is 253717283. The next prime is 253717309. The reversal of 253717291 is 192717352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253717291 - 2³ = 253717283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253717291.

It is not a weakly prime, because it can be changed into another prime (253717091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126858645 + 126858646.

It is an arithmetic number, because the mean of its divisors is an integer number (126858646).

Almost surely, 2^253717291 is an apocalyptic number.

253717291 is a deficient number, since it is larger than the sum of its proper divisors (1).

253717291 is an equidigital number, since it uses as much as digits as its factorization.

253717291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 37.

The square root of 253717291 is about 15928.5056110107. The cubic root of 253717291 is about 633.0675048447.

The spelling of 253717291 in words is "two hundred fifty-three million, seven hundred seventeen thousand, two hundred ninety-one".