81110375 has 16 divisors (see below), whose sum is σ = 101487360. Its totient is φ = 64720800.

The previous prime is 81110363. The next prime is 81110389. The reversal of 81110375 is 57301118.

It is not a de Polignac number, because 81110375 - 2⁸ = 81110119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75341 + ... + 76409.

It is an arithmetic number, because the mean of its divisors is an integer number (6342960).

Almost surely, 2^81110375 is an apocalyptic number.

81110375 is a deficient number, since it is larger than the sum of its proper divisors (20376985).

81110375 is a wasteful number, since it uses less digits than its factorization.

81110375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 81110375 is about 9006.1298569363. The cubic root of 81110375 is about 432.8713106537.

The spelling of 81110375 in words is "eighty-one million, one hundred ten thousand, three hundred seventy-five".