265751 has 4 divisors (see below), whose sum is σ = 266952. Its totient is φ = 264552.

The previous prime is 265747. The next prime is 265757. The reversal of 265751 is 157562.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 157562 = 2 ⋅78781.

It is a cyclic number.

It is not a de Polignac number, because 265751 - 2² = 265747 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 265751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265757) 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, 161 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (66738).

2²⁶⁵⁷⁵¹ is an apocalyptic number.

265751 is a deficient number, since it is larger than the sum of its proper divisors (1201).

265751 is an equidigital number, since it uses as much as digits as its factorization.

265751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 2100, while the sum is 26.

The square root of 265751 is about 515.5104266647. The cubic root of 265751 is about 64.2922022846.

The spelling of 265751 in words is "two hundred sixty-five thousand, seven hundred fifty-one".