265457 has 4 divisors (see below), whose sum is σ = 267120. Its totient is φ = 263796.

The previous prime is 265451. The next prime is 265459. The reversal of 265457 is 754562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265457 - 2¹⁶ = 199921 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4⁹ + 5 + 5⁵ + 7² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265451) 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, 563 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (66780).

2²⁶⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

265457 is a deficient number, since it is larger than the sum of its proper divisors (1663).

265457 is a wasteful number, since it uses less digits than its factorization.

265457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662.

The product of its digits is 8400, while the sum is 29.

The square root of 265457 is about 515.2251934834. The cubic root of 265457 is about 64.2684847418.

The spelling of 265457 in words is "two hundred sixty-five thousand, four hundred fifty-seven".