85435543 has 2 divisors, whose sum is σ = 85435544. Its totient is φ = 85435542.

The previous prime is 85435517. The next prime is 85435573. The reversal of 85435543 is 34553458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85435543 - 2²⁵ = 51881111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85435573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42717771 + 42717772.

It is an arithmetic number, because the mean of its divisors is an integer number (42717772).

Almost surely, 2^85435543 is an apocalyptic number.

85435543 is a deficient number, since it is larger than the sum of its proper divisors (1).

85435543 is an equidigital number, since it uses as much as digits as its factorization.

85435543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 37.

The square root of 85435543 is about 9243.1349119225. The cubic root of 85435543 is about 440.4326718466.

The spelling of 85435543 in words is "eighty-five million, four hundred thirty-five thousand, five hundred forty-three".