264261 has 8 divisors (see below), whose sum is σ = 358560. Its totient is φ = 173072.

The previous prime is 264221. The next prime is 264263. The reversal of 264261 is 162462.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264261 - 2⁷ = 264133 is a prime.

It is a super-2 number, since 2×264261² = 139667752242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 923.

It is an arithmetic number, because the mean of its divisors is an integer number (44820).

2²⁶⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

264261 is a deficient number, since it is larger than the sum of its proper divisors (94299).

264261 is a wasteful number, since it uses less digits than its factorization.

264261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555.

The product of its digits is 576, while the sum is 21.

The square root of 264261 is about 514.0632256834. The cubic root of 264261 is about 64.1718202041.

It can be divided in two parts, 264 and 261, that added together give a palindrome (525).

The spelling of 264261 in words is "two hundred sixty-four thousand, two hundred sixty-one".