81017295 has 8 divisors (see below), whose sum is σ = 129627696. Its totient is φ = 43209216.

The previous prime is 81017281. The next prime is 81017303. The reversal of 81017295 is 59271018.

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

It is not a de Polignac number, because 81017295 - 2⁵ = 81017263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700562 + ... + 2700591.

It is an arithmetic number, because the mean of its divisors is an integer number (16203462).

Almost surely, 2^81017295 is an apocalyptic number.

81017295 is a deficient number, since it is larger than the sum of its proper divisors (48610401).

81017295 is a wasteful number, since it uses less digits than its factorization.

81017295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401161.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 81017295 is about 9000.9607820499. The cubic root of 81017295 is about 432.7056635999.

The spelling of 81017295 in words is "eighty-one million, seventeen thousand, two hundred ninety-five".