253494859 has 2 divisors, whose sum is σ = 253494860. Its totient is φ = 253494858.

The previous prime is 253494817. The next prime is 253494863. The reversal of 253494859 is 958494352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253494859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253494889) 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, 126747429 + 126747430.

It is an arithmetic number, because the mean of its divisors is an integer number (126747430).

Almost surely, 2^253494859 is an apocalyptic number.

253494859 is a deficient number, since it is larger than the sum of its proper divisors (1).

253494859 is an equidigital number, since it uses as much as digits as its factorization.

253494859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

The square root of 253494859 is about 15921.5218807751. The cubic root of 253494859 is about 632.8824489490.

The spelling of 253494859 in words is "two hundred fifty-three million, four hundred ninety-four thousand, eight hundred fifty-nine".