264551 has 6 divisors (see below), whose sum is σ = 307800. Its totient is φ = 226716.

The previous prime is 264529. The next prime is 264553. The reversal of 264551 is 155462.

It is not a de Polignac number, because 264551 - 2⁶ = 264487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2651 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2²⁶⁴⁵⁵¹ is an apocalyptic number.

264551 is a deficient number, since it is larger than the sum of its proper divisors (43249).

264551 is an equidigital number, since it uses as much as digits as its factorization.

264551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413 (or 5406 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 264551 is about 514.3452148120. The cubic root of 264551 is about 64.1952856727.

The spelling of 264551 in words is "two hundred sixty-four thousand, five hundred fifty-one".