253264387 has 2 divisors, whose sum is σ = 253264388. Its totient is φ = 253264386.

The previous prime is 253264379. The next prime is 253264391. The reversal of 253264387 is 783462352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253264387 - 2³ = 253264379 is a prime.

It is not a weakly prime, because it can be changed into another prime (253264397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126632193 + 126632194.

It is an arithmetic number, because the mean of its divisors is an integer number (126632194).

Almost surely, 2^253264387 is an apocalyptic number.

253264387 is a deficient number, since it is larger than the sum of its proper divisors (1).

253264387 is an equidigital number, since it uses as much as digits as its factorization.

253264387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 253264387 is about 15914.2824846111. The cubic root of 253264387 is about 632.6905898170.

The spelling of 253264387 in words is "two hundred fifty-three million, two hundred sixty-four thousand, three hundred eighty-seven".