253615413 has 4 divisors (see below), whose sum is σ = 338153888. Its totient is φ = 169076940.

The previous prime is 253615403. The next prime is 253615429. The reversal of 253615413 is 314516352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253615413 - 2⁹ = 253614901 is a prime.

It is a super-2 number, since 2×253615413² = 128641555422321138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253615403) 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, 42269233 + ... + 42269238.

It is an arithmetic number, because the mean of its divisors is an integer number (84538472).

Almost surely, 2^253615413 is an apocalyptic number.

It is an amenable number.

253615413 is a deficient number, since it is larger than the sum of its proper divisors (84538475).

253615413 is an equidigital number, since it uses as much as digits as its factorization.

253615413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84538474.

The product of its digits is 10800, while the sum is 30.

The square root of 253615413 is about 15925.3073125764. The cubic root of 253615413 is about 632.9827592268.

The spelling of 253615413 in words is "two hundred fifty-three million, six hundred fifteen thousand, four hundred thirteen".