80481591 has 12 divisors (see below), whose sum is σ = 116330760. Its totient is φ = 53617680.

The previous prime is 80481589. The next prime is 80481593. The reversal of 80481591 is 19518408.

It is an interprime number because it is at equal distance from previous prime (80481589) and next prime (80481593).

It is not a de Polignac number, because 80481591 - 2¹ = 80481589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80481593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19845 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (9694230).

Almost surely, 2^80481591 is an apocalyptic number.

80481591 is a deficient number, since it is larger than the sum of its proper divisors (35849169).

80481591 is a wasteful number, since it uses less digits than its factorization.

80481591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 80481591 is about 8971.1532703438. The cubic root of 80481591 is about 431.7498390906.

Adding to 80481591 its reverse (19518408), we get a palindrome (99999999).

It can be divided in two parts, 80 and 481591, that added together give a triangular number (481671 = T₉₈₁).

The spelling of 80481591 in words is "eighty million, four hundred eighty-one thousand, five hundred ninety-one".