53039999 has 4 divisors (see below), whose sum is σ = 53241936. Its totient is φ = 52838064.

The previous prime is 53039993. The next prime is 53040023. The reversal of 53039999 is 99993035.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99993035 = 5 ⋅19998607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53039999 is a prime.

It is a Duffinian number.

53039999 is a modest number, since divided by 9999 gives 5303 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53039993) 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, 100574 + ... + 101099.

It is an arithmetic number, because the mean of its divisors is an integer number (13310484).

Almost surely, 2^53039999 is an apocalyptic number.

53039999 is a deficient number, since it is larger than the sum of its proper divisors (201937).

53039999 is a wasteful number, since it uses less digits than its factorization.

53039999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201936.

The product of its (nonzero) digits is 295245, while the sum is 47.

The square root of 53039999 is about 7282.8565137589. The cubic root of 53039999 is about 375.7230470526.

The spelling of 53039999 in words is "fifty-three million, thirty-nine thousand, nine hundred ninety-nine".