53812563 has 8 divisors (see below), whose sum is σ = 82000128. Its totient is φ = 30750024.

The previous prime is 53812511. The next prime is 53812613. The reversal of 53812563 is 36521835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53812563 - 2²⁰ = 52763987 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53812163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281231 + ... + 1281272.

It is an arithmetic number, because the mean of its divisors is an integer number (10250016).

Almost surely, 2^53812563 is an apocalyptic number.

53812563 is a deficient number, since it is larger than the sum of its proper divisors (28187565).

53812563 is a wasteful number, since it uses less digits than its factorization.

53812563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562513.

The product of its digits is 21600, while the sum is 33.

The square root of 53812563 is about 7335.7046696279. The cubic root of 53812563 is about 377.5384824007.

The spelling of 53812563 in words is "fifty-three million, eight hundred twelve thousand, five hundred sixty-three".