263057 has 4 divisors (see below), whose sum is σ = 264420. Its totient is φ = 261696.

The previous prime is 263047. The next prime is 263063. The reversal of 263057 is 750362.

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 36481 + 226576 = 191^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 263057 - 2¹⁶ = 197521 is a prime.

It is a d-powerful number, because it can be written as 2 + 6⁵ + 0 + 3¹¹ + 5⁷ + 7 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263047) 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, 332 + ... + 797.

It is an arithmetic number, because the mean of its divisors is an integer number (66105).

2²⁶³⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

263057 is a deficient number, since it is larger than the sum of its proper divisors (1363).

263057 is a wasteful number, since it uses less digits than its factorization.

263057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

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

The square root of 263057 is about 512.8908265898. The cubic root of 263057 is about 64.0742140388.

The spelling of 263057 in words is "two hundred sixty-three thousand, fifty-seven".