80531544 has 64 divisors (see below), whose sum is σ = 207728640. Its totient is φ = 26000640.

The previous prime is 80531543. The next prime is 80531569. The reversal of 80531544 is 44513508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80531543) 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 15 ways as a sum of consecutive naturals, for example, 219249 + ... + 219615.

It is an arithmetic number, because the mean of its divisors is an integer number (3245760).

Almost surely, 2^80531544 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 80531544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103864320).

80531544 is an abundant number, since it is smaller than the sum of its proper divisors (127197096).

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

80531544 is a wasteful number, since it uses less digits than its factorization.

80531544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 80531544 is about 8973.9369286841. The cubic root of 80531544 is about 431.8391462183.

The spelling of 80531544 in words is "eighty million, five hundred thirty-one thousand, five hundred forty-four".