80872901 has 2 divisors, whose sum is σ = 80872902. Its totient is φ = 80872900.

The previous prime is 80872889. The next prime is 80872903. The reversal of 80872901 is 10927808.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 29964676 = 7135^2 + 5474^2 .

It is a cyclic number.

It is not a de Polignac number, because 80872901 - 2¹⁰ = 80871877 is a prime.

It is a super-2 number, since 2×80872901² = 13080852232311602, which contains 22 as substring.

Together with 80872903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80872903) 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 as a sum of consecutive naturals, namely, 40436450 + 40436451.

It is an arithmetic number, because the mean of its divisors is an integer number (40436451).

Almost surely, 2^80872901 is an apocalyptic number.

It is an amenable number.

80872901 is a deficient number, since it is larger than the sum of its proper divisors (1).

80872901 is an equidigital number, since it uses as much as digits as its factorization.

80872901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 80872901 is about 8992.9361723522. The cubic root of 80872901 is about 432.4484458580.

The spelling of 80872901 in words is "eighty million, eight hundred seventy-two thousand, nine hundred one".