253885387 has 4 divisors (see below), whose sum is σ = 290154736. Its totient is φ = 217616040.

The previous prime is 253885369. The next prime is 253885397. The reversal of 253885387 is 783588352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253885387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253885387.

It is not an unprimeable number, because it can be changed into a prime (253885367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18134664 + ... + 18134677.

It is an arithmetic number, because the mean of its divisors is an integer number (72538684).

Almost surely, 2^253885387 is an apocalyptic number.

253885387 is a deficient number, since it is larger than the sum of its proper divisors (36269349).

253885387 is an equidigital number, since it uses as much as digits as its factorization.

253885387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36269348.

The product of its digits is 1612800, while the sum is 49.

The square root of 253885387 is about 15933.7813151806. The cubic root of 253885387 is about 633.2072832862.

The spelling of 253885387 in words is "two hundred fifty-three million, eight hundred eighty-five thousand, three hundred eighty-seven".