81014075 has 12 divisors (see below), whose sum is σ = 100731648. Its totient is φ = 64634400.

The previous prime is 81014071. The next prime is 81014077. The reversal of 81014075 is 57041018.

It is not a de Polignac number, because 81014075 - 2² = 81014071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81014071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5345 + ... + 13805.

It is an arithmetic number, because the mean of its divisors is an integer number (8394304).

Almost surely, 2^81014075 is an apocalyptic number.

81014075 is a deficient number, since it is larger than the sum of its proper divisors (19717573).

81014075 is a wasteful number, since it uses less digits than its factorization.

81014075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854 (or 8849 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 81014075 is about 9000.7819104787. The cubic root of 81014075 is about 432.6999309527.

The spelling of 81014075 in words is "eighty-one million, fourteen thousand, seventy-five".