257011513 has 8 divisors (see below), whose sum is σ = 282234816. Its totient is φ = 232098000.

The previous prime is 257011511. The next prime is 257011549. The reversal of 257011513 is 315110752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257011513 - 2¹ = 257011511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257011511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75706 + ... + 79027.

It is an arithmetic number, because the mean of its divisors is an integer number (35279352).

Almost surely, 2^257011513 is an apocalyptic number.

It is an amenable number.

257011513 is a deficient number, since it is larger than the sum of its proper divisors (25223303).

257011513 is a wasteful number, since it uses less digits than its factorization.

257011513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154895.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 257011513 is about 16031.5786184642. The cubic root of 257011513 is about 635.7956117429.

The spelling of 257011513 in words is "two hundred fifty-seven million, eleven thousand, five hundred thirteen".