80531560 has 16 divisors (see below), whose sum is σ = 181196100. Its totient is φ = 32212608.

The previous prime is 80531543. The next prime is 80531569. The reversal of 80531560 is 6513508.

It can be written as a sum of positive squares in 2 ways, for example, as 79245604 + 1285956 = 8902^2 + 1134^2 .

It is not an unprimeable number, because it can be changed into a prime (80531569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006605 + ... + 1006684.

Almost surely, 2^80531560 is an apocalyptic number.

It is an amenable number.

80531560 is an abundant number, since it is smaller than the sum of its proper divisors (100664540).

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

80531560 is a wasteful number, since it uses less digits than its factorization.

80531560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013300 (or 2013296 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 80531560 is about 8973.9378201545. The cubic root of 80531560 is about 431.8391748176.

The spelling of 80531560 in words is "eighty million, five hundred thirty-one thousand, five hundred sixty".