257063 has 4 divisors (see below), whose sum is σ = 261480. Its totient is φ = 252648.

The previous prime is 257053. The next prime is 257069. The reversal of 257063 is 360752.

257063 is nontrivially palindromic in base 6.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257063 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 (257069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2120 + ... + 2237.

It is an arithmetic number, because the mean of its divisors is an integer number (65370).

2²⁵⁷⁰⁶³ is an apocalyptic number.

257063 is a deficient number, since it is larger than the sum of its proper divisors (4417).

257063 is an equidigital number, since it uses as much as digits as its factorization.

257063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 257063 is about 507.0138065181. The cubic root of 257063 is about 63.5838065124.

The spelling of 257063 in words is "two hundred fifty-seven thousand, sixty-three".