253434491 has 2 divisors, whose sum is σ = 253434492. Its totient is φ = 253434490.

The previous prime is 253434457. The next prime is 253434551. The reversal of 253434491 is 194434352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253434491 - 2¹⁴ = 253418107 is a prime.

It is not a weakly prime, because it can be changed into another prime (253434091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126717245 + 126717246.

It is an arithmetic number, because the mean of its divisors is an integer number (126717246).

Almost surely, 2^253434491 is an apocalyptic number.

253434491 is a deficient number, since it is larger than the sum of its proper divisors (1).

253434491 is an equidigital number, since it uses as much as digits as its factorization.

253434491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 253434491 is about 15919.6259692243. The cubic root of 253434491 is about 632.8322061406.

The spelling of 253434491 in words is "two hundred fifty-three million, four hundred thirty-four thousand, four hundred ninety-one".