53664243 has 4 divisors (see below), whose sum is σ = 71552328. Its totient is φ = 35776160.

The previous prime is 53664211. The next prime is 53664251. The reversal of 53664243 is 34246635.

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 53664243 - 2⁵ = 53664211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53654243) 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, 8944038 + ... + 8944043.

It is an arithmetic number, because the mean of its divisors is an integer number (17888082).

Almost surely, 2^53664243 is an apocalyptic number.

53664243 is a deficient number, since it is larger than the sum of its proper divisors (17888085).

53664243 is a wasteful number, since it uses less digits than its factorization.

53664243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17888084.

The product of its digits is 51840, while the sum is 33.

The square root of 53664243 is about 7325.5882357665. The cubic root of 53664243 is about 377.1913018044.

The spelling of 53664243 in words is "fifty-three million, six hundred sixty-four thousand, two hundred forty-three".