263953 has 2 divisors, whose sum is σ = 263954. Its totient is φ = 263952.

The previous prime is 263951. The next prime is 263957. The reversal of 263953 is 359362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 784 = 513^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 263953 - 2¹ = 263951 is a prime.

Together with 263951, it forms a pair of twin primes.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131976 + 131977.

It is an arithmetic number, because the mean of its divisors is an integer number (131977).

2²⁶³⁹⁵³ is an apocalyptic number.

It is an amenable number.

263953 is a deficient number, since it is larger than the sum of its proper divisors (1).

263953 is an equidigital number, since it uses as much as digits as its factorization.

263953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 263953 is about 513.7635642978. The cubic root of 263953 is about 64.1468794519.

The spelling of 263953 in words is "two hundred sixty-three thousand, nine hundred fifty-three".