80505594 has 48 divisors (see below), whose sum is σ = 189189000. Its totient is φ = 24594048.

The previous prime is 80505583. The next prime is 80505613. The reversal of 80505594 is 49550508.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53100369 + 27405225 = 7287^2 + 5235^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33712 + ... + 36020.

Almost surely, 2^80505594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80505594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94594500).

80505594 is an abundant number, since it is smaller than the sum of its proper divisors (108683406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80505594 is a wasteful number, since it uses less digits than its factorization.

80505594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2476 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 80505594 is about 8972.4909584797. The cubic root of 80505594 is about 431.7927568195.

The spelling of 80505594 in words is "eighty million, five hundred five thousand, five hundred ninety-four".