85054889 has 2 divisors, whose sum is σ = 85054890. Its totient is φ = 85054888.

The previous prime is 85054861. The next prime is 85054901. The reversal of 85054889 is 98845058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47844889 + 37210000 = 6917^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 85054889 - 2⁸ = 85054633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85056889) 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, 42527444 + 42527445.

It is an arithmetic number, because the mean of its divisors is an integer number (42527445).

Almost surely, 2^85054889 is an apocalyptic number.

It is an amenable number.

85054889 is a deficient number, since it is larger than the sum of its proper divisors (1).

85054889 is an equidigital number, since it uses as much as digits as its factorization.

85054889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 85054889 is about 9222.5207508577. The cubic root of 85054889 is about 439.7775890411. Note that the first 3 decimals are identical.

The spelling of 85054889 in words is "eighty-five million, fifty-four thousand, eight hundred eighty-nine".