257613113 has 4 divisors (see below), whose sum is σ = 257666640. Its totient is φ = 257559588.

The previous prime is 257613079. The next prime is 257613143. The reversal of 257613113 is 311316752.

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 a cyclic number.

It is not a de Polignac number, because 257613113 - 2⁶ = 257613049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257613143) 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, 18743 + ... + 29436.

It is an arithmetic number, because the mean of its divisors is an integer number (64416660).

Almost surely, 2^257613113 is an apocalyptic number.

It is an amenable number.

257613113 is a deficient number, since it is larger than the sum of its proper divisors (53527).

257613113 is an equidigital number, since it uses as much as digits as its factorization.

257613113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53526.

The product of its digits is 3780, while the sum is 29.

The square root of 257613113 is about 16050.3306196477. The cubic root of 257613113 is about 636.2913049533.

Adding to 257613113 its reverse (311316752), we get a palindrome (568929865).

The spelling of 257613113 in words is "two hundred fifty-seven million, six hundred thirteen thousand, one hundred thirteen".