80293021 has 2 divisors, whose sum is σ = 80293022. Its totient is φ = 80293020.

The previous prime is 80293013. The next prime is 80293033. The reversal of 80293021 is 12039208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70744921 + 9548100 = 8411^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 80293021 - 2³ = 80293013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80293051) 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 as a sum of consecutive naturals, namely, 40146510 + 40146511.

It is an arithmetic number, because the mean of its divisors is an integer number (40146511).

Almost surely, 2^80293021 is an apocalyptic number.

It is an amenable number.

80293021 is a deficient number, since it is larger than the sum of its proper divisors (1).

80293021 is an equidigital number, since it uses as much as digits as its factorization.

80293021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 80293021 is about 8960.6373099239. The cubic root of 80293021 is about 431.4123758490.

The spelling of 80293021 in words is "eighty million, two hundred ninety-three thousand, twenty-one".