53043999 has 4 divisors (see below), whose sum is σ = 70725336. Its totient is φ = 35362664.

The previous prime is 53043979. The next prime is 53044001. The reversal of 53043999 is 99934035.

It is a happy number.

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 53043999 - 2¹¹ = 53041951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53043999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53043959) 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, 8840664 + ... + 8840669.

It is an arithmetic number, because the mean of its divisors is an integer number (17681334).

Almost surely, 2^53043999 is an apocalyptic number.

53043999 is a deficient number, since it is larger than the sum of its proper divisors (17681337).

53043999 is a wasteful number, since it uses less digits than its factorization.

53043999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681336.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 53043999 is about 7283.1311261023. The cubic root of 53043999 is about 375.7324918392.

The spelling of 53043999 in words is "fifty-three million, forty-three thousand, nine hundred ninety-nine".