83645453 has 4 divisors (see below), whose sum is σ = 85685628. Its totient is φ = 81605280.

The previous prime is 83645407. The next prime is 83645479. The reversal of 83645453 is 35454638.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35022724 + 48622729 = 5918^2 + 6973^2 .

It is a cyclic number.

It is not a de Polignac number, because 83645453 - 2²⁴ = 66868237 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 (83645953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020026 + ... + 1020107.

It is an arithmetic number, because the mean of its divisors is an integer number (21421407).

Almost surely, 2^83645453 is an apocalyptic number.

It is an amenable number.

83645453 is a deficient number, since it is larger than the sum of its proper divisors (2040175).

83645453 is a wasteful number, since it uses less digits than its factorization.

83645453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040174.

The product of its digits is 172800, while the sum is 38.

The square root of 83645453 is about 9145.7888123442. The cubic root of 83645453 is about 437.3348762437.

The spelling of 83645453 in words is "eighty-three million, six hundred forty-five thousand, four hundred fifty-three".