80871502 has 4 divisors (see below), whose sum is σ = 121307256. Its totient is φ = 40435750.

The previous prime is 80871493. The next prime is 80871509. The reversal of 80871502 is 20517808.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80871509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217874 + ... + 20217877.

It is an arithmetic number, because the mean of its divisors is an integer number (30326814).

Almost surely, 2^80871502 is an apocalyptic number.

80871502 is a deficient number, since it is larger than the sum of its proper divisors (40435754).

80871502 is a wasteful number, since it uses less digits than its factorization.

80871502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40435753.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 80871502 is about 8992.8583887438. The cubic root of 80871502 is about 432.4459522380.

The spelling of 80871502 in words is "eighty million, eight hundred seventy-one thousand, five hundred two".