257234017 has 4 divisors (see below), whose sum is σ = 257771520. Its totient is φ = 256696516.

The previous prime is 257233997. The next prime is 257234023. The reversal of 257234017 is 710432752.

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 257234017 - 2¹¹ = 257231969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257234017.

It is not an unprimeable number, because it can be changed into a prime (257234057) 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, 268033 + ... + 268990.

It is an arithmetic number, because the mean of its divisors is an integer number (64442880).

Almost surely, 2^257234017 is an apocalyptic number.

It is an amenable number.

257234017 is a deficient number, since it is larger than the sum of its proper divisors (537503).

257234017 is an equidigital number, since it uses as much as digits as its factorization.

257234017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537502.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 257234017 is about 16038.5166708147. The cubic root of 257234017 is about 635.9790357725.

Adding to 257234017 its reverse (710432752), we get a palindrome (967666769).

The spelling of 257234017 in words is "two hundred fifty-seven million, two hundred thirty-four thousand, seventeen".