53000043 has 4 divisors (see below), whose sum is σ = 70666728. Its totient is φ = 35333360.

The previous prime is 53000039. The next prime is 53000047. The reversal of 53000043 is 34000035.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53000039) and next prime (53000047).

It is a cyclic number.

It is not a de Polignac number, because 53000043 - 2² = 53000039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52999986 and 53000031.

It is not an unprimeable number, because it can be changed into a prime (53000047) 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, 8833338 + ... + 8833343.

It is an arithmetic number, because the mean of its divisors is an integer number (17666682).

Almost surely, 2^53000043 is an apocalyptic number.

53000043 is a deficient number, since it is larger than the sum of its proper divisors (17666685).

53000043 is a wasteful number, since it uses less digits than its factorization.

53000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17666684.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 53000043 is about 7280.1128425320. The cubic root of 53000043 is about 375.6286770072.

Adding to 53000043 its reverse (34000035), we get a palindrome (87000078).

The spelling of 53000043 in words is "fifty-three million, forty-three", and thus it is an aban number and an uban number.