85806043 has 2 divisors, whose sum is σ = 85806044. Its totient is φ = 85806042.

The previous prime is 85806037. The next prime is 85806053. The reversal of 85806043 is 34060858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85806043 - 2⁵ = 85806011 is a prime.

It is not a weakly prime, because it can be changed into another prime (85806023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42903021 + 42903022.

It is an arithmetic number, because the mean of its divisors is an integer number (42903022).

Almost surely, 2^85806043 is an apocalyptic number.

85806043 is a deficient number, since it is larger than the sum of its proper divisors (1).

85806043 is an equidigital number, since it uses as much as digits as its factorization.

85806043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 85806043 is about 9263.1551320271. The cubic root of 85806043 is about 441.0684142365.

The spelling of 85806043 in words is "eighty-five million, eight hundred six thousand, forty-three".