264532161 has 4 divisors (see below), whose sum is σ = 352709552. Its totient is φ = 176354772.

The previous prime is 264532157. The next prime is 264532183. The reversal of 264532161 is 161235462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 264532161 - 2² = 264532157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (264532561) 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, 44088691 + ... + 44088696.

It is an arithmetic number, because the mean of its divisors is an integer number (88177388).

Almost surely, 2^264532161 is an apocalyptic number.

It is an amenable number.

264532161 is a deficient number, since it is larger than the sum of its proper divisors (88177391).

264532161 is an equidigital number, since it uses as much as digits as its factorization.

264532161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88177390.

The product of its digits is 8640, while the sum is 30.

The square root of 264532161 is about 16264.4446877230. Note that the first 3 decimals coincide. The cubic root of 264532161 is about 641.9376182824.

The spelling of 264532161 in words is "two hundred sixty-four million, five hundred thirty-two thousand, one hundred sixty-one".