80455421 has 2 divisors, whose sum is σ = 80455422. Its totient is φ = 80455420.

The previous prime is 80455411. The next prime is 80455429. The reversal of 80455421 is 12455408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46104100 + 34351321 = 6790^2 + 5861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80455421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80455429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40227710 + 40227711.

It is an arithmetic number, because the mean of its divisors is an integer number (40227711).

Almost surely, 2^80455421 is an apocalyptic number.

It is an amenable number.

80455421 is a deficient number, since it is larger than the sum of its proper divisors (1).

80455421 is an equidigital number, since it uses as much as digits as its factorization.

80455421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 80455421 is about 8969.6945878887. The cubic root of 80455421 is about 431.7030370081.

The spelling of 80455421 in words is "eighty million, four hundred fifty-five thousand, four hundred twenty-one".