84801281 has 2 divisors, whose sum is σ = 84801282. Its totient is φ = 84801280.

The previous prime is 84801271. The next prime is 84801293. The reversal of 84801281 is 18210848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 33535681 = 7160^2 + 5791^2 .

It is a cyclic number.

It is not a de Polignac number, because 84801281 - 2⁶ = 84801217 is a prime.

It is a super-2 number, since 2×84801281² = 14382514518481922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84801221) 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, 42400640 + 42400641.

It is an arithmetic number, because the mean of its divisors is an integer number (42400641).

Almost surely, 2^84801281 is an apocalyptic number.

It is an amenable number.

84801281 is a deficient number, since it is larger than the sum of its proper divisors (1).

84801281 is an equidigital number, since it uses as much as digits as its factorization.

84801281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 84801281 is about 9208.7611001698. The cubic root of 84801281 is about 439.3400592263.

The spelling of 84801281 in words is "eighty-four million, eight hundred one thousand, two hundred eighty-one".