80245381 has 2 divisors, whose sum is σ = 80245382. Its totient is φ = 80245380.

The previous prime is 80245327. The next prime is 80245387. The reversal of 80245381 is 18354208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79816356 + 429025 = 8934^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 80245381 - 2⁹ = 80244869 is a prime.

It is a super-2 number, since 2×80245381² = 12878642343670322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80245387) 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, 40122690 + 40122691.

It is an arithmetic number, because the mean of its divisors is an integer number (40122691).

Almost surely, 2^80245381 is an apocalyptic number.

It is an amenable number.

80245381 is a deficient number, since it is larger than the sum of its proper divisors (1).

80245381 is an equidigital number, since it uses as much as digits as its factorization.

80245381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 80245381 is about 8957.9786224349. The cubic root of 80245381 is about 431.3270361293.

Adding to 80245381 its reverse (18354208), we get a palindrome (98599589).

The spelling of 80245381 in words is "eighty million, two hundred forty-five thousand, three hundred eighty-one".