265612091 has 2 divisors, whose sum is σ = 265612092. Its totient is φ = 265612090.

The previous prime is 265612069. The next prime is 265612103. The reversal of 265612091 is 190216562.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265612091 - 2²² = 261417787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265612021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132806045 + 132806046.

It is an arithmetic number, because the mean of its divisors is an integer number (132806046).

Almost surely, 2^265612091 is an apocalyptic number.

265612091 is a deficient number, since it is larger than the sum of its proper divisors (1).

265612091 is an equidigital number, since it uses as much as digits as its factorization.

265612091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 265612091 is about 16297.6099781532. The cubic root of 265612091 is about 642.8099841079.

The spelling of 265612091 in words is "two hundred sixty-five million, six hundred twelve thousand, ninety-one".