80572079 has 4 divisors (see below), whose sum is σ = 92082384. Its totient is φ = 69061776.

The previous prime is 80572073. The next prime is 80572087. The reversal of 80572079 is 97027508.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-80572079 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 (80572073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5755142 + ... + 5755155.

It is an arithmetic number, because the mean of its divisors is an integer number (23020596).

Almost surely, 2^80572079 is an apocalyptic number.

80572079 is a deficient number, since it is larger than the sum of its proper divisors (11510305).

80572079 is a wasteful number, since it uses less digits than its factorization.

80572079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11510304.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 80572079 is about 8976.1951293407. The cubic root of 80572079 is about 431.9115884888.

The spelling of 80572079 in words is "eighty million, five hundred seventy-two thousand, seventy-nine".