80415281 has 2 divisors, whose sum is σ = 80415282. Its totient is φ = 80415280.

The previous prime is 80415241. The next prime is 80415311. The reversal of 80415281 is 18251408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41165056 + 39250225 = 6416^2 + 6265^2 .

It is a cyclic number.

It is not a de Polignac number, because 80415281 - 2⁶ = 80415217 is a prime.

It is a super-2 number, since 2×80415281² = 12933234836617922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80415211) 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, 40207640 + 40207641.

It is an arithmetic number, because the mean of its divisors is an integer number (40207641).

Almost surely, 2^80415281 is an apocalyptic number.

It is an amenable number.

80415281 is a deficient number, since it is larger than the sum of its proper divisors (1).

80415281 is an equidigital number, since it uses as much as digits as its factorization.

80415281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 80415281 is about 8967.4567743592. The cubic root of 80415281 is about 431.6312314364.

Adding to 80415281 its reverse (18251408), we get a palindrome (98666689).

The spelling of 80415281 in words is "eighty million, four hundred fifteen thousand, two hundred eighty-one".