264504321 has 12 divisors (see below), whose sum is σ = 385633872. Its totient is φ = 174687576.

The previous prime is 264504313. The next prime is 264504329. The reversal of 264504321 is 123405462.

It is an interprime number because it is at equal distance from previous prime (264504313) and next prime (264504329).

It is not a de Polignac number, because 264504321 - 2³ = 264504313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (264504329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136371 + ... + 138296.

It is an arithmetic number, because the mean of its divisors is an integer number (32136156).

Almost surely, 2^264504321 is an apocalyptic number.

It is an amenable number.

264504321 is a deficient number, since it is larger than the sum of its proper divisors (121129551).

264504321 is a wasteful number, since it uses less digits than its factorization.

264504321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274780 (or 274777 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 264504321 is about 16263.5888105916. The cubic root of 264504321 is about 641.9150978068.

Adding to 264504321 its reverse (123405462), we get a palindrome (387909783).

The spelling of 264504321 in words is "two hundred sixty-four million, five hundred four thousand, three hundred twenty-one".