264893591 has 2 divisors, whose sum is σ = 264893592. Its totient is φ = 264893590.

The previous prime is 264893581. The next prime is 264893597. The reversal of 264893591 is 195398462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264893591 - 2¹⁰ = 264892567 is a prime.

It is a super-2 number, since 2×264893591² = 140337229105750562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264893597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132446795 + 132446796.

It is an arithmetic number, because the mean of its divisors is an integer number (132446796).

Almost surely, 2^264893591 is an apocalyptic number.

264893591 is a deficient number, since it is larger than the sum of its proper divisors (1).

264893591 is an equidigital number, since it uses as much as digits as its factorization.

264893591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 264893591 is about 16275.5519414857. The cubic root of 264893591 is about 642.2298447866.

The spelling of 264893591 in words is "two hundred sixty-four million, eight hundred ninety-three thousand, five hundred ninety-one".