81095255 has 8 divisors (see below), whose sum is σ = 97367712. Its totient is φ = 64840608.

The previous prime is 81095251. The next prime is 81095269. The reversal of 81095255 is 55259018.

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 81095255 - 2² = 81095251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81095251) 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, 9614 + ... + 15956.

It is an arithmetic number, because the mean of its divisors is an integer number (12170964).

Almost surely, 2^81095255 is an apocalyptic number.

81095255 is a deficient number, since it is larger than the sum of its proper divisors (16272457).

81095255 is a wasteful number, since it uses less digits than its factorization.

81095255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8905.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 81095255 is about 9005.2903895432. The cubic root of 81095255 is about 432.8444114194.

The spelling of 81095255 in words is "eighty-one million, ninety-five thousand, two hundred fifty-five".