263957 has 2 divisors, whose sum is σ = 263958. Its totient is φ = 263956.

The previous prime is 263953. The next prime is 263983. The reversal of 263957 is 759362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256036 + 7921 = 506^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 263957 - 2² = 263953 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 263957.

It is not a weakly prime, because it can be changed into another prime (263951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131978 + 131979.

It is an arithmetic number, because the mean of its divisors is an integer number (131979).

2²⁶³⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

263957 is a deficient number, since it is larger than the sum of its proper divisors (1).

263957 is an equidigital number, since it uses as much as digits as its factorization.

263957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 263957 is about 513.7674571243. The cubic root of 263957 is about 64.1472034821.

The spelling of 263957 in words is "two hundred sixty-three thousand, nine hundred fifty-seven".