257054317 has 4 divisors (see below), whose sum is σ = 276827740. Its totient is φ = 237280896.

The previous prime is 257054267. The next prime is 257054323. The reversal of 257054317 is 713450752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12257001 + 244797316 = 3501^2 + 15646^2 .

It is a cyclic number.

It is not a de Polignac number, because 257054317 - 2¹¹ = 257052269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257054377) 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, 9886692 + ... + 9886717.

It is an arithmetic number, because the mean of its divisors is an integer number (69206935).

Almost surely, 2^257054317 is an apocalyptic number.

It is an amenable number.

257054317 is a deficient number, since it is larger than the sum of its proper divisors (19773423).

257054317 is a wasteful number, since it uses less digits than its factorization.

257054317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19773422.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 257054317 is about 16032.9135530633. The cubic root of 257054317 is about 635.8309059915.

The spelling of 257054317 in words is "two hundred fifty-seven million, fifty-four thousand, three hundred seventeen".