80540243 has 16 divisors (see below), whose sum is σ = 93808320. Its totient is φ = 67723776.

The previous prime is 80540233. The next prime is 80540267. The reversal of 80540243 is 34204508.

It is a cyclic number.

It is not a de Polignac number, because 80540243 - 2⁶ = 80540179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80540233) 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, 141263 + ... + 141831.

It is an arithmetic number, because the mean of its divisors is an integer number (5863020).

Almost surely, 2^80540243 is an apocalyptic number.

80540243 is a deficient number, since it is larger than the sum of its proper divisors (13268077).

80540243 is a wasteful number, since it uses less digits than its factorization.

80540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 80540243 is about 8974.4215969610. The cubic root of 80540243 is about 431.8546947156.

The spelling of 80540243 in words is "eighty million, five hundred forty thousand, two hundred forty-three".