253868253 has 16 divisors (see below), whose sum is σ = 356790720. Its totient is φ = 160119936.

The previous prime is 253868249. The next prime is 253868257. The reversal of 253868253 is 352868352.

It is an interprime number because it is at equal distance from previous prime (253868249) and next prime (253868257).

It is not a de Polignac number, because 253868253 - 2² = 253868249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253868257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46251 + ... + 51447.

It is an arithmetic number, because the mean of its divisors is an integer number (22299420).

Almost surely, 2^253868253 is an apocalyptic number.

It is an amenable number.

253868253 is a deficient number, since it is larger than the sum of its proper divisors (102922467).

253868253 is a wasteful number, since it uses less digits than its factorization.

253868253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076.

The product of its digits is 345600, while the sum is 42.

The square root of 253868253 is about 15933.2436434017. The cubic root of 253868253 is about 633.1930385151.

Subtracting 253868253 from its reverse (352868352), we obtain a palindrome (99000099).

The spelling of 253868253 in words is "two hundred fifty-three million, eight hundred sixty-eight thousand, two hundred fifty-three".