257135113 has 4 divisors (see below), whose sum is σ = 270668560. Its totient is φ = 243601668.

The previous prime is 257135063. The next prime is 257135119. The reversal of 257135113 is 311531752.

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 257135113 - 2²⁵ = 223580681 is a prime.

It is a super-2 number, since 2×257135113² = 132236932675045538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257135119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766695 + ... + 6766732.

It is an arithmetic number, because the mean of its divisors is an integer number (67667140).

Almost surely, 2^257135113 is an apocalyptic number.

It is an amenable number.

257135113 is a deficient number, since it is larger than the sum of its proper divisors (13533447).

257135113 is a wasteful number, since it uses less digits than its factorization.

257135113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13533446.

The product of its digits is 3150, while the sum is 28.

The square root of 257135113 is about 16035.4330468497. The cubic root of 257135113 is about 635.8975160541.

Adding to 257135113 its reverse (311531752), we get a palindrome (568666865).

The spelling of 257135113 in words is "two hundred fifty-seven million, one hundred thirty-five thousand, one hundred thirteen".