253724385 has 32 divisors (see below), whose sum is σ = 445916160. Its totient is φ = 122620608.

The previous prime is 253724353. The next prime is 253724399. The reversal of 253724385 is 583427352.

It is not a de Polignac number, because 253724385 - 2⁵ = 253724353 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12799 + ... + 25908.

It is an arithmetic number, because the mean of its divisors is an integer number (13934880).

Almost surely, 2^253724385 is an apocalyptic number.

It is an amenable number.

253724385 is a deficient number, since it is larger than the sum of its proper divisors (192191775).

253724385 is a wasteful number, since it uses less digits than its factorization.

253724385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38757.

The product of its digits is 201600, while the sum is 39.

The square root of 253724385 is about 15928.7282919887. The cubic root of 253724385 is about 633.0734050325.

The spelling of 253724385 in words is "two hundred fifty-three million, seven hundred twenty-four thousand, three hundred eighty-five".