83563543 has 4 divisors (see below), whose sum is σ = 95501200. Its totient is φ = 71625888.

The previous prime is 83563541. The next prime is 83563567. The reversal of 83563543 is 34536538.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34536538 = 2 ⋅17268269.

It is a cyclic number.

It is not a de Polignac number, because 83563543 - 2¹ = 83563541 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 (83563541) 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, 5968818 + ... + 5968831.

It is an arithmetic number, because the mean of its divisors is an integer number (23875300).

Almost surely, 2^83563543 is an apocalyptic number.

83563543 is a deficient number, since it is larger than the sum of its proper divisors (11937657).

83563543 is a wasteful number, since it uses less digits than its factorization.

83563543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11937656.

The product of its digits is 129600, while the sum is 37.

The square root of 83563543 is about 9141.3096982872. The cubic root of 83563543 is about 437.1920758971.

The spelling of 83563543 in words is "eighty-three million, five hundred sixty-three thousand, five hundred forty-three".