80590509 has 6 divisors (see below), whose sum is σ = 116408526. Its totient is φ = 53727000.

The previous prime is 80590453. The next prime is 80590511. The reversal of 80590509 is 90509508.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 22297284 = 7635^2 + 4722^2 .

It is not a de Polignac number, because 80590509 - 2¹² = 80586413 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 (80590589) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4477242 + ... + 4477259.

It is an arithmetic number, because the mean of its divisors is an integer number (19401421).

Almost surely, 2^80590509 is an apocalyptic number.

It is an amenable number.

80590509 is a deficient number, since it is larger than the sum of its proper divisors (35818017).

80590509 is a wasteful number, since it uses less digits than its factorization.

80590509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8954507 (or 8954504 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 80590509 is about 8977.2216748836. The cubic root of 80590509 is about 431.9445176946.

The spelling of 80590509 in words is "eighty million, five hundred ninety thousand, five hundred nine".