52189999 has 4 divisors (see below), whose sum is σ = 52677864. Its totient is φ = 51702136.

The previous prime is 52189987. The next prime is 52190023. The reversal of 52189999 is 99998125.

52189999 is nontrivially palindromic in base 15.

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 52189999 - 2⁷ = 52189871 is a prime.

It is a Duffinian number.

52189999 is a modest number, since divided by 9999 gives 5218 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52189909) 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, 243772 + ... + 243985.

It is an arithmetic number, because the mean of its divisors is an integer number (13169466).

Almost surely, 2^52189999 is an apocalyptic number.

52189999 is a deficient number, since it is larger than the sum of its proper divisors (487865).

52189999 is a wasteful number, since it uses less digits than its factorization.

52189999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487864.

The product of its digits is 524880, while the sum is 52.

The square root of 52189999 is about 7224.2645992516. The cubic root of 52189999 is about 373.7051614535.

The spelling of 52189999 in words is "fifty-two million, one hundred eighty-nine thousand, nine hundred ninety-nine".