81410201 has 4 divisors (see below), whose sum is σ = 82171152. Its totient is φ = 80649252.

The previous prime is 81410191. The next prime is 81410207. The reversal of 81410201 is 10201418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 81410201 - 2¹⁸ = 81148057 is a prime.

It is a super-3 number, since 3×81410201³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81410201.

It is not an unprimeable number, because it can be changed into a prime (81410207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380315 + ... + 380528.

It is an arithmetic number, because the mean of its divisors is an integer number (20542788).

Almost surely, 2^81410201 is an apocalyptic number.

It is an amenable number.

81410201 is a deficient number, since it is larger than the sum of its proper divisors (760951).

81410201 is a wasteful number, since it uses less digits than its factorization.

81410201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760950.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 81410201 is about 9022.7601652709. The cubic root of 81410201 is about 433.4040270595.

Adding to 81410201 its reverse (10201418), we get a palindrome (91611619).

The spelling of 81410201 in words is "eighty-one million, four hundred ten thousand, two hundred one".