81294301 has 4 divisors (see below), whose sum is σ = 88684704. Its totient is φ = 73903900.

The previous prime is 81294299. The next prime is 81294319. The reversal of 81294301 is 10349218.

It is a happy number.

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 81294301 - 2¹ = 81294299 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 81294301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81294371) 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, 3695185 + ... + 3695206.

It is an arithmetic number, because the mean of its divisors is an integer number (22171176).

Almost surely, 2^81294301 is an apocalyptic number.

It is an amenable number.

81294301 is a deficient number, since it is larger than the sum of its proper divisors (7390403).

81294301 is a wasteful number, since it uses less digits than its factorization.

81294301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7390402.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 81294301 is about 9016.3352311236. The cubic root of 81294301 is about 433.1982568471.

The spelling of 81294301 in words is "eighty-one million, two hundred ninety-four thousand, three hundred one".