81260341 has 4 divisors (see below), whose sum is σ = 81367884. Its totient is φ = 81152800.

The previous prime is 81260339. The next prime is 81260371. The reversal of 81260341 is 14306218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14306218 = 2 ⋅7153109.

It can be written as a sum of positive squares in 2 ways, for example, as 34269316 + 46991025 = 5854^2 + 6855^2 .

It is a cyclic number.

It is not a de Polignac number, because 81260341 - 2¹ = 81260339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81260371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52630 + ... + 54151.

It is an arithmetic number, because the mean of its divisors is an integer number (20341971).

Almost surely, 2^81260341 is an apocalyptic number.

It is an amenable number.

81260341 is a deficient number, since it is larger than the sum of its proper divisors (107543).

81260341 is a wasteful number, since it uses less digits than its factorization.

81260341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107542.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 81260341 is about 9014.4517858825. The cubic root of 81260341 is about 433.1379268214.

Adding to 81260341 its reverse (14306218), we get a palindrome (95566559).

The spelling of 81260341 in words is "eighty-one million, two hundred sixty thousand, three hundred forty-one".