264504091 has 4 divisors (see below), whose sum is σ = 265690432. Its totient is φ = 263317752.

The previous prime is 264504067. The next prime is 264504101. The reversal of 264504091 is 190405462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264504091 - 2⁷ = 264503963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264504001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592836 + ... + 593281.

It is an arithmetic number, because the mean of its divisors is an integer number (66422608).

Almost surely, 2^264504091 is an apocalyptic number.

264504091 is a deficient number, since it is larger than the sum of its proper divisors (1186341).

264504091 is a wasteful number, since it uses less digits than its factorization.

264504091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186340.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 264504091 is about 16263.5817395800. The cubic root of 264504091 is about 641.9149117474.

The spelling of 264504091 in words is "two hundred sixty-four million, five hundred four thousand, ninety-one".