51235563 has 8 divisors (see below), whose sum is σ = 68661648. Its totient is φ = 33983264.

The previous prime is 51235553. The next prime is 51235567. The reversal of 51235563 is 36553215.

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

It is a cyclic number.

It is not a de Polignac number, because 51235563 - 2²⁰ = 50186987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51235563.

It is not an unprimeable number, because it can be changed into a prime (51235567) 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, 42756 + ... + 43937.

It is an arithmetic number, because the mean of its divisors is an integer number (8582706).

Almost surely, 2^51235563 is an apocalyptic number.

51235563 is a deficient number, since it is larger than the sum of its proper divisors (17426085).

51235563 is a wasteful number, since it uses less digits than its factorization.

51235563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86893.

The product of its digits is 13500, while the sum is 30.

The square root of 51235563 is about 7157.9021367996. The cubic root of 51235563 is about 371.4130601370.

Adding to 51235563 its reverse (36553215), we get a palindrome (87788778).

The spelling of 51235563 in words is "fifty-one million, two hundred thirty-five thousand, five hundred sixty-three".