253667385 has 24 divisors (see below), whose sum is σ = 462833280. Its totient is φ = 128168352.

The previous prime is 253667371. The next prime is 253667399. The reversal of 253667385 is 583766352.

It is an interprime number because it is at equal distance from previous prime (253667371) and next prime (253667399).

It is not a de Polignac number, because 253667385 - 2⁸ = 253667129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 253667385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147489 + ... + 149198.

It is an arithmetic number, because the mean of its divisors is an integer number (19284720).

Almost surely, 2^253667385 is an apocalyptic number.

It is an amenable number.

253667385 is a deficient number, since it is larger than the sum of its proper divisors (209165895).

253667385 is a wasteful number, since it uses less digits than its factorization.

253667385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296717 (or 296714 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 253667385 is about 15926.9389714408. The cubic root of 253667385 is about 633.0259941558.

The spelling of 253667385 in words is "two hundred fifty-three million, six hundred sixty-seven thousand, three hundred eighty-five".