80529813 has 24 divisors (see below), whose sum is σ = 143165568. Its totient is φ = 42476832.

The previous prime is 80529769. The next prime is 80529851. The reversal of 80529813 is 31892508.

It is not a de Polignac number, because 80529813 - 2¹³ = 80521621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80529893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48345 + ... + 49982.

It is an arithmetic number, because the mean of its divisors is an integer number (5965232).

Almost surely, 2^80529813 is an apocalyptic number.

It is an amenable number.

80529813 is a deficient number, since it is larger than the sum of its proper divisors (62635755).

80529813 is a wasteful number, since it uses less digits than its factorization.

80529813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98353 (or 98350 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 80529813 is about 8973.8404822016. The cubic root of 80529813 is about 431.8360521143.

The spelling of 80529813 in words is "eighty million, five hundred twenty-nine thousand, eight hundred thirteen".