257268953 has 4 divisors (see below), whose sum is σ = 257444148. Its totient is φ = 257093760.

The previous prime is 257268941. The next prime is 257268959. The reversal of 257268953 is 359862752.

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 179881744 + 77387209 = 13412^2 + 8797^2 .

It is a cyclic number.

It is not a de Polignac number, because 257268953 - 2⁴ = 257268937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257268898 and 257268907.

It is not an unprimeable number, because it can be changed into a prime (257268959) 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, 85376 + ... + 88337.

It is an arithmetic number, because the mean of its divisors is an integer number (64361037).

Almost surely, 2^257268953 is an apocalyptic number.

It is an amenable number.

257268953 is a deficient number, since it is larger than the sum of its proper divisors (175195).

257268953 is a wasteful number, since it uses less digits than its factorization.

257268953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175194.

The product of its digits is 907200, while the sum is 47.

The square root of 257268953 is about 16039.6057619880. The cubic root of 257268953 is about 636.0078261039.

The spelling of 257268953 in words is "two hundred fifty-seven million, two hundred sixty-eight thousand, nine hundred fifty-three".