51563133 has 24 divisors (see below), whose sum is σ = 76123008. Its totient is φ = 33625152.

The previous prime is 51563107. The next prime is 51563153. The reversal of 51563133 is 33136515.

It is not a de Polignac number, because 51563133 - 2⁸ = 51562877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51563097 and 51563106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51563153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140316 + ... + 140682.

It is an arithmetic number, because the mean of its divisors is an integer number (3171792).

Almost surely, 2^51563133 is an apocalyptic number.

It is an amenable number.

51563133 is a deficient number, since it is larger than the sum of its proper divisors (24559875).

51563133 is a wasteful number, since it uses less digits than its factorization.

51563133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 670 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 51563133 is about 7180.7473844997. The cubic root of 51563133 is about 372.2029113254.

Adding to 51563133 its reverse (33136515), we get a palindrome (84699648).

The spelling of 51563133 in words is "fifty-one million, five hundred sixty-three thousand, one hundred thirty-three".