51208563 has 8 divisors (see below), whose sum is σ = 78032128. Its totient is φ = 29262024.

The previous prime is 51208561. The next prime is 51208583. The reversal of 51208563 is 36580215.

51208563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51208563 - 2¹ = 51208561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51208563.

It is not an unprimeable number, because it can be changed into a prime (51208561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219231 + ... + 1219272.

It is an arithmetic number, because the mean of its divisors is an integer number (9754016).

Almost surely, 2^51208563 is an apocalyptic number.

51208563 is a deficient number, since it is larger than the sum of its proper divisors (26823565).

51208563 is a wasteful number, since it uses less digits than its factorization.

51208563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438513.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51208563 is about 7156.0158607985. The cubic root of 51208563 is about 371.3478065378.

Adding to 51208563 its reverse (36580215), we get a palindrome (87788778).

The spelling of 51208563 in words is "fifty-one million, two hundred eight thousand, five hundred sixty-three".