80533560 has 128 divisors (see below), whose sum is σ = 250905600. Its totient is φ = 20666880.

The previous prime is 80533559. The next prime is 80533589. The reversal of 80533560 is 6533508.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614695 + ... + 614825.

It is an arithmetic number, because the mean of its divisors is an integer number (1960200).

Almost surely, 2^80533560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80533560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125452800).

80533560 is an abundant number, since it is smaller than the sum of its proper divisors (170372040).

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

80533560 is a wasteful number, since it uses less digits than its factorization.

80533560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 80533560 is about 8974.0492532635. The cubic root of 80533560 is about 431.8427496943.

The spelling of 80533560 in words is "eighty million, five hundred thirty-three thousand, five hundred sixty".