53540843 has 4 divisors (see below), whose sum is σ = 53561928. Its totient is φ = 53519760.

The previous prime is 53540831. The next prime is 53540863. The reversal of 53540843 is 34804535.

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 53540843 - 2¹⁶ = 53475307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53540863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6113 + ... + 12018.

It is an arithmetic number, because the mean of its divisors is an integer number (13390482).

Almost surely, 2^53540843 is an apocalyptic number.

53540843 is a deficient number, since it is larger than the sum of its proper divisors (21085).

53540843 is a wasteful number, since it uses less digits than its factorization.

53540843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21084.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 53540843 is about 7317.1608565071. The cubic root of 53540843 is about 376.9019649545.

The spelling of 53540843 in words is "fifty-three million, five hundred forty thousand, eight hundred forty-three".