85422543 has 4 divisors (see below), whose sum is σ = 113896728. Its totient is φ = 56948360.

The previous prime is 85422539. The next prime is 85422551. The reversal of 85422543 is 34522458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85422543 - 2² = 85422539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85422523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14237088 + ... + 14237093.

It is an arithmetic number, because the mean of its divisors is an integer number (28474182).

Almost surely, 2^85422543 is an apocalyptic number.

85422543 is a deficient number, since it is larger than the sum of its proper divisors (28474185).

85422543 is a wasteful number, since it uses less digits than its factorization.

85422543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28474184.

The product of its digits is 38400, while the sum is 33.

The square root of 85422543 is about 9242.4316605534. The cubic root of 85422543 is about 440.4103317488.

The spelling of 85422543 in words is "eighty-five million, four hundred twenty-two thousand, five hundred forty-three".