81265883 has 8 divisors (see below), whose sum is σ = 81932928. Its totient is φ = 80601984.

The previous prime is 81265879. The next prime is 81265909. The reversal of 81265883 is 38856218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81265883 - 2² = 81265879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81265883.

It is not an unprimeable number, because it can be changed into a prime (81265823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82691 + ... + 83667.

It is an arithmetic number, because the mean of its divisors is an integer number (10241616).

Almost surely, 2^81265883 is an apocalyptic number.

81265883 is a deficient number, since it is larger than the sum of its proper divisors (667045).

81265883 is a wasteful number, since it uses less digits than its factorization.

81265883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its digits is 92160, while the sum is 41.

The square root of 81265883 is about 9014.7591759292. The cubic root of 81265883 is about 433.1477733459.

The spelling of 81265883 in words is "eighty-one million, two hundred sixty-five thousand, eight hundred eighty-three".