85280543 has 4 divisors (see below), whose sum is σ = 85300368. Its totient is φ = 85260720.

The previous prime is 85280537. The next prime is 85280581. The reversal of 85280543 is 34508258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34508258 = 2 ⋅17254129.

It is a cyclic number.

It is not a de Polignac number, because 85280543 - 2¹² = 85276447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85280743) 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, 446 + ... + 13067.

It is an arithmetic number, because the mean of its divisors is an integer number (21325092).

Almost surely, 2^85280543 is an apocalyptic number.

85280543 is a deficient number, since it is larger than the sum of its proper divisors (19825).

85280543 is a wasteful number, since it uses less digits than its factorization.

85280543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19824.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 85280543 is about 9234.7465043714. The cubic root of 85280543 is about 440.1661614165.

The spelling of 85280543 in words is "eighty-five million, two hundred eighty thousand, five hundred forty-three".