82261265 has 4 divisors (see below), whose sum is σ = 98713524. Its totient is φ = 65809008.

The previous prime is 82261243. The next prime is 82261297. The reversal of 82261265 is 56216228.

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 11566801 + 70694464 = 3401^2 + 8408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82261265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 8226122 + ... + 8226131.

It is an arithmetic number, because the mean of its divisors is an integer number (24678381).

Almost surely, 2^82261265 is an apocalyptic number.

It is an amenable number.

82261265 is a deficient number, since it is larger than the sum of its proper divisors (16452259).

82261265 is a wasteful number, since it uses less digits than its factorization.

82261265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16452258.

The product of its digits is 11520, while the sum is 32.

The square root of 82261265 is about 9069.7996118988. The cubic root of 82261265 is about 434.9090662964.

The spelling of 82261265 in words is "eighty-two million, two hundred sixty-one thousand, two hundred sixty-five".