265731073 has 4 divisors (see below), whose sum is σ = 266106580. Its totient is φ = 265355568.

The previous prime is 265731019. The next prime is 265731083. The reversal of 265731073 is 370137562.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 251952129 = 3712^2 + 15873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265731073 is a prime.

It is a super-2 number, since 2×265731073² = 141226006315462658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265731083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186690 + ... + 188107.

It is an arithmetic number, because the mean of its divisors is an integer number (66526645).

Almost surely, 2^265731073 is an apocalyptic number.

It is an amenable number.

265731073 is a deficient number, since it is larger than the sum of its proper divisors (375507).

265731073 is an equidigital number, since it uses as much as digits as its factorization.

265731073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375506.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 265731073 is about 16301.2598592870. The cubic root of 265731073 is about 642.9059528818.

The spelling of 265731073 in words is "two hundred sixty-five million, seven hundred thirty-one thousand, seventy-three".