80815471 has 8 divisors (see below), whose sum is σ = 89154000. Its totient is φ = 72642240.

The previous prime is 80815459. The next prime is 80815477. The reversal of 80815471 is 17451808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80815471 - 2⁵ = 80815439 is a prime.

It is a super-3 number, since 3×80815471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80815477) 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, 40296 + ... + 42253.

It is an arithmetic number, because the mean of its divisors is an integer number (11144250).

Almost surely, 2^80815471 is an apocalyptic number.

80815471 is a deficient number, since it is larger than the sum of its proper divisors (8338529).

80815471 is a wasteful number, since it uses less digits than its factorization.

80815471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82649.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 80815471 is about 8989.7425435882. The cubic root of 80815471 is about 432.3460572332.

The spelling of 80815471 in words is "eighty million, eight hundred fifteen thousand, four hundred seventy-one".