257253593 has 8 divisors (see below), whose sum is σ = 265783296. Its totient is φ = 248738400.

The previous prime is 257253541. The next prime is 257253599. The reversal of 257253593 is 395352752.

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 257253593 - 2¹² = 257249497 is a prime.

It is a super-2 number, since 2×257253593² = 132358822222819298, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 257253593.

It is not an unprimeable number, because it can be changed into a prime (257253599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41528 + ... + 47318.

It is an arithmetic number, because the mean of its divisors is an integer number (33222912).

Almost surely, 2^257253593 is an apocalyptic number.

It is an amenable number.

257253593 is a deficient number, since it is larger than the sum of its proper divisors (8529703).

257253593 is a wasteful number, since it uses less digits than its factorization.

257253593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255.

The product of its digits is 283500, while the sum is 41.

The square root of 257253593 is about 16039.1269400800. The cubic root of 257253593 is about 635.9951684363.

It can be divided in two parts, 2572 and 53593, that added together give a palindrome (56165).

The spelling of 257253593 in words is "two hundred fifty-seven million, two hundred fifty-three thousand, five hundred ninety-three".