85281983 has 2 divisors, whose sum is σ = 85281984. Its totient is φ = 85281982.

The previous prime is 85281967. The next prime is 85281991. The reversal of 85281983 is 38918258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85281983 - 2⁴ = 85281967 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85281913) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42640991 + 42640992.

It is an arithmetic number, because the mean of its divisors is an integer number (42640992).

Almost surely, 2^85281983 is an apocalyptic number.

85281983 is a deficient number, since it is larger than the sum of its proper divisors (1).

85281983 is an equidigital number, since it uses as much as digits as its factorization.

85281983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 85281983 is about 9234.8244704488. The cubic root of 85281983 is about 440.1686388699.

The spelling of 85281983 in words is "eighty-five million, two hundred eighty-one thousand, nine hundred eighty-three".