253315819 has 2 divisors, whose sum is σ = 253315820. Its totient is φ = 253315818.

The previous prime is 253315789. The next prime is 253315837. The reversal of 253315819 is 918513352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253315819 - 2¹⁹ = 252791531 is a prime.

It is a super-2 number, since 2×253315819² = 128337808311281522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253315919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126657909 + 126657910.

It is an arithmetic number, because the mean of its divisors is an integer number (126657910).

Almost surely, 2^253315819 is an apocalyptic number.

253315819 is a deficient number, since it is larger than the sum of its proper divisors (1).

253315819 is an equidigital number, since it uses as much as digits as its factorization.

253315819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 253315819 is about 15915.8983095520. The cubic root of 253315819 is about 632.7334150773.

The spelling of 253315819 in words is "two hundred fifty-three million, three hundred fifteen thousand, eight hundred nineteen".