83355281 has 2 divisors, whose sum is σ = 83355282. Its totient is φ = 83355280.

The previous prime is 83355271. The next prime is 83355287. The reversal of 83355281 is 18255338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 40844881 = 6520^2 + 6391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83355281 is a prime.

It is a super-2 number, since 2×83355281² = 13896205741177922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83355287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41677640 + 41677641.

It is an arithmetic number, because the mean of its divisors is an integer number (41677641).

Almost surely, 2^83355281 is an apocalyptic number.

It is an amenable number.

83355281 is a deficient number, since it is larger than the sum of its proper divisors (1).

83355281 is an equidigital number, since it uses as much as digits as its factorization.

83355281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 83355281 is about 9129.9113358236. The cubic root of 83355281 is about 436.8285751079.

The spelling of 83355281 in words is "eighty-three million, three hundred fifty-five thousand, two hundred eighty-one".