80355973 has 2 divisors, whose sum is σ = 80355974. Its totient is φ = 80355972.

The previous prime is 80355953. The next prime is 80356021. The reversal of 80355973 is 37955308.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79174404 + 1181569 = 8898^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 80355973 - 2⁹ = 80355461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80355943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40177986 + 40177987.

It is an arithmetic number, because the mean of its divisors is an integer number (40177987).

Almost surely, 2^80355973 is an apocalyptic number.

It is an amenable number.

80355973 is a deficient number, since it is larger than the sum of its proper divisors (1).

80355973 is an equidigital number, since it uses as much as digits as its factorization.

80355973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 80355973 is about 8964.1493182566. The cubic root of 80355973 is about 431.5250928989.

The spelling of 80355973 in words is "eighty million, three hundred fifty-five thousand, nine hundred seventy-three".