81056095 has 4 divisors (see below), whose sum is σ = 97267320. Its totient is φ = 64844872.

The previous prime is 81056093. The next prime is 81056111. The reversal of 81056095 is 59065018.

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

It is a cyclic number.

It is not a de Polignac number, because 81056095 - 2¹ = 81056093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81056095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81056093) 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, 8105605 + ... + 8105614.

It is an arithmetic number, because the mean of its divisors is an integer number (24316830).

Almost surely, 2^81056095 is an apocalyptic number.

81056095 is a deficient number, since it is larger than the sum of its proper divisors (16211225).

81056095 is a wasteful number, since it uses less digits than its factorization.

81056095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16211224.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 81056095 is about 9003.1158495268. The cubic root of 81056095 is about 432.7747282785.

The spelling of 81056095 in words is "eighty-one million, fifty-six thousand, ninety-five".