80872133 has 2 divisors, whose sum is σ = 80872134. Its totient is φ = 80872132.

The previous prime is 80872093. The next prime is 80872139. The reversal of 80872133 is 33127808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75030244 + 5841889 = 8662^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 80872133 - 2⁶ = 80872069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80872133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80872139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40436066 + 40436067.

It is an arithmetic number, because the mean of its divisors is an integer number (40436067).

Almost surely, 2^80872133 is an apocalyptic number.

It is an amenable number.

80872133 is a deficient number, since it is larger than the sum of its proper divisors (1).

80872133 is an equidigital number, since it uses as much as digits as its factorization.

80872133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 80872133 is about 8992.8934720700. The cubic root of 80872133 is about 432.4470769551.

The spelling of 80872133 in words is "eighty million, eight hundred seventy-two thousand, one hundred thirty-three".