53199999 has 18 divisors (see below), whose sum is σ = 79416168. Its totient is φ = 34317000.

The previous prime is 53199997. The next prime is 53200009. The reversal of 53199999 is 99999135.

It is a happy number.

It is not a de Polignac number, because 53199999 - 2¹ = 53199997 is a prime.

53199999 is a modest number, since divided by 9999 gives 5319 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53199997) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5574 + ... + 11724.

Almost surely, 2^53199999 is an apocalyptic number.

53199999 is a deficient number, since it is larger than the sum of its proper divisors (26216169).

53199999 is a wasteful number, since it uses less digits than its factorization.

53199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219 (or 6185 counting only the distinct ones).

The product of its digits is 885735, while the sum is 54.

The square root of 53199999 is about 7293.8329429731. The cubic root of 53199999 is about 376.1004687570.

The spelling of 53199999 in words is "fifty-three million, one hundred ninety-nine thousand, nine hundred ninety-nine".