53516263 has 4 divisors (see below), whose sum is σ = 53535160. Its totient is φ = 53497368.

The previous prime is 53516249. The next prime is 53516269. The reversal of 53516263 is 36261535.

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 53516263 - 2⁵ = 53516231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53516269) 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, 4245 + ... + 11182.

It is an arithmetic number, because the mean of its divisors is an integer number (13383790).

Almost surely, 2^53516263 is an apocalyptic number.

53516263 is a deficient number, since it is larger than the sum of its proper divisors (18897).

53516263 is a wasteful number, since it uses less digits than its factorization.

53516263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18896.

The product of its digits is 16200, while the sum is 31.

The square root of 53516263 is about 7315.4810504847. The cubic root of 53516263 is about 376.8442789722.

Adding to 53516263 its reverse (36261535), we get a palindrome (89777798).

The spelling of 53516263 in words is "fifty-three million, five hundred sixteen thousand, two hundred sixty-three".