80851580 has 24 divisors (see below), whose sum is σ = 172325328. Its totient is φ = 31857408.

The previous prime is 80851579. The next prime is 80851583. The reversal of 80851580 is 8515808.

It is a self number, because there is not a number n which added to its sum of digits gives 80851580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80851583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28829 + ... + 31508.

It is an arithmetic number, because the mean of its divisors is an integer number (7180222).

Almost surely, 2^80851580 is an apocalyptic number.

It is an amenable number.

80851580 is an abundant number, since it is smaller than the sum of its proper divisors (91473748).

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

80851580 is a wasteful number, since it uses less digits than its factorization.

80851580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60413 (or 60411 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 80851580 is about 8991.7506638029. The cubic root of 80851580 is about 432.4104395396.

The spelling of 80851580 in words is "eighty million, eight hundred fifty-one thousand, five hundred eighty".