253565351 has 4 divisors (see below), whose sum is σ = 273070392. Its totient is φ = 234060312.

The previous prime is 253565309. The next prime is 253565359. The reversal of 253565351 is 153565352.

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

It is a cyclic number.

It is not a de Polignac number, because 253565351 - 2⁶ = 253565287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253565359) 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, 9752501 + ... + 9752526.

It is an arithmetic number, because the mean of its divisors is an integer number (68267598).

Almost surely, 2^253565351 is an apocalyptic number.

253565351 is a deficient number, since it is larger than the sum of its proper divisors (19505041).

253565351 is a wasteful number, since it uses less digits than its factorization.

253565351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19505040.

The product of its digits is 67500, while the sum is 35.

The square root of 253565351 is about 15923.7354599981. The cubic root of 253565351 is about 632.9411076204.

Subtracting from 253565351 its reverse (153565352), we obtain a palindrome (99999999).

The spelling of 253565351 in words is "two hundred fifty-three million, five hundred sixty-five thousand, three hundred fifty-one".