257712653 has 4 divisors (see below), whose sum is σ = 281141088. Its totient is φ = 234284220.

The previous prime is 257712629. The next prime is 257712667. The reversal of 257712653 is 356217752.

257712653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 257712653 - 2⁸ = 257712397 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 (257712683) 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, 11714201 + ... + 11714222.

It is an arithmetic number, because the mean of its divisors is an integer number (70285272).

Almost surely, 2^257712653 is an apocalyptic number.

It is an amenable number.

257712653 is a deficient number, since it is larger than the sum of its proper divisors (23428435).

257712653 is a wasteful number, since it uses less digits than its factorization.

257712653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23428434.

The product of its digits is 88200, while the sum is 38.

The square root of 257712653 is about 16053.4311908701. The cubic root of 257712653 is about 636.3732473150.

The spelling of 257712653 in words is "two hundred fifty-seven million, seven hundred twelve thousand, six hundred fifty-three".