253585391 has 4 divisors (see below), whose sum is σ = 253618992. Its totient is φ = 253551792.

The previous prime is 253585349. The next prime is 253585393. The reversal of 253585391 is 193585352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 253585391 - 2¹⁰ = 253584367 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 (253585393) 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, 371 + ... + 22523.

It is an arithmetic number, because the mean of its divisors is an integer number (63404748).

Almost surely, 2^253585391 is an apocalyptic number.

253585391 is a deficient number, since it is larger than the sum of its proper divisors (33601).

253585391 is a wasteful number, since it uses less digits than its factorization.

253585391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33600.

The product of its digits is 162000, while the sum is 41.

The square root of 253585391 is about 15924.3646969039. The cubic root of 253585391 is about 632.9577815673.

The spelling of 253585391 in words is "two hundred fifty-three million, five hundred eighty-five thousand, three hundred ninety-one".