53243816 has 16 divisors (see below), whose sum is σ = 99909600. Its totient is φ = 26601264.

The previous prime is 53243807. The next prime is 53243819. The reversal of 53243816 is 61834235.

It is not an unprimeable number, because it can be changed into a prime (53243819) 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, 18695 + ... + 21353.

It is an arithmetic number, because the mean of its divisors is an integer number (6244350).

Almost surely, 2^53243816 is an apocalyptic number.

It is an amenable number.

53243816 is a deficient number, since it is larger than the sum of its proper divisors (46665784).

53243816 is a wasteful number, since it uses less digits than its factorization.

53243816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168 (or 5164 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 53243816 is about 7296.8360266625. The cubic root of 53243816 is about 376.2036960269.

The spelling of 53243816 in words is "fifty-three million, two hundred forty-three thousand, eight hundred sixteen".