53564443 has 4 divisors (see below), whose sum is σ = 54704160. Its totient is φ = 52424728.

The previous prime is 53564437. The next prime is 53564461. The reversal of 53564443 is 34446535.

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 53564443 - 2⁵ = 53564411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53564399 and 53564408.

It is not an unprimeable number, because it can be changed into a prime (53564473) 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, 569788 + ... + 569881.

It is an arithmetic number, because the mean of its divisors is an integer number (13676040).

Almost surely, 2^53564443 is an apocalyptic number.

53564443 is a deficient number, since it is larger than the sum of its proper divisors (1139717).

53564443 is a wasteful number, since it uses less digits than its factorization.

53564443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139716.

The product of its digits is 86400, while the sum is 34.

The square root of 53564443 is about 7318.7733261797. The cubic root of 53564443 is about 376.9573343964.

The spelling of 53564443 in words is "fifty-three million, five hundred sixty-four thousand, four hundred forty-three".