81093001 has 16 divisors (see below), whose sum is σ = 91300608. Its totient is φ = 71392000.

The previous prime is 81092983. The next prime is 81093031. The reversal of 81093001 is 10039018.

It is a cyclic number.

It is not a de Polignac number, because 81093001 - 2²¹ = 78995849 is a prime.

It is a super-2 number, since 2×81093001² = 13152149622372002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81093031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51441 + ... + 52993.

It is an arithmetic number, because the mean of its divisors is an integer number (5706288).

Almost surely, 2^81093001 is an apocalyptic number.

It is an amenable number.

81093001 is a deficient number, since it is larger than the sum of its proper divisors (10207607).

81093001 is a wasteful number, since it uses less digits than its factorization.

81093001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 81093001 is about 9005.1652400164. The cubic root of 81093001 is about 432.8404011546.

The spelling of 81093001 in words is "eighty-one million, ninety-three thousand, one".