81045314 has 24 divisors (see below), whose sum is σ = 146297340. Its totient is φ = 33534816.

The previous prime is 81045301. The next prime is 81045319. The reversal of 81045314 is 41354018.

It can be written as a sum of positive squares in 2 ways, for example, as 77176225 + 3869089 = 8785^2 + 1967^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81045319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11417 + ... + 17100.

Almost surely, 2^81045314 is an apocalyptic number.

81045314 is a deficient number, since it is larger than the sum of its proper divisors (65252026).

81045314 is a wasteful number, since it uses less digits than its factorization.

81045314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562 (or 28555 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 81045314 is about 9002.5170924581. The cubic root of 81045314 is about 432.7555401216.

The spelling of 81045314 in words is "eighty-one million, forty-five thousand, three hundred fourteen".