257050613 has 4 divisors (see below), whose sum is σ = 257178720. Its totient is φ = 256922508.

The previous prime is 257050609. The next prime is 257050637. The reversal of 257050613 is 316050752.

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 257050613 - 2² = 257050609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257050643) 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 3 ways as a sum of consecutive naturals, for example, 60995 + ... + 65072.

It is an arithmetic number, because the mean of its divisors is an integer number (64294680).

Almost surely, 2^257050613 is an apocalyptic number.

It is an amenable number.

257050613 is a deficient number, since it is larger than the sum of its proper divisors (128107).

257050613 is a wasteful number, since it uses less digits than its factorization.

257050613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128106.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 257050613 is about 16032.7980402673. The cubic root of 257050613 is about 635.8278519949.

The spelling of 257050613 in words is "two hundred fifty-seven million, fifty thousand, six hundred thirteen".