53823816 has 48 divisors (see below), whose sum is σ = 149336460. Its totient is φ = 17502720.

The previous prime is 53823811. The next prime is 53823817. The reversal of 53823816 is 61832835.

It can be written as a sum of positive squares in 2 ways, for example, as 51408900 + 2414916 = 7170^2 + 1554^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53823811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6165 + ... + 12068.

Almost surely, 2^53823816 is an apocalyptic number.

It is an amenable number.

53823816 is an abundant number, since it is smaller than the sum of its proper divisors (95512644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53823816 is a wasteful number, since it uses less digits than its factorization.

53823816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18286 (or 18279 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 53823816 is about 7336.4716315133. The cubic root of 53823816 is about 377.5647968534.

The spelling of 53823816 in words is "fifty-three million, eight hundred twenty-three thousand, eight hundred sixteen".