253461513 has 4 divisors (see below), whose sum is σ = 337948688. Its totient is φ = 168974340.

The previous prime is 253461511. The next prime is 253461521. The reversal of 253461513 is 315164352.

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 253461513 - 2¹ = 253461511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253461511) 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, 42243583 + ... + 42243588.

It is an arithmetic number, because the mean of its divisors is an integer number (84487172).

Almost surely, 2^253461513 is an apocalyptic number.

It is an amenable number.

253461513 is a deficient number, since it is larger than the sum of its proper divisors (84487175).

253461513 is an equidigital number, since it uses as much as digits as its factorization.

253461513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84487174.

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

The square root of 253461513 is about 15920.4746474469. The cubic root of 253461513 is about 632.8546968759.

The spelling of 253461513 in words is "two hundred fifty-three million, four hundred sixty-one thousand, five hundred thirteen".