51427563 has 16 divisors (see below), whose sum is σ = 78057216. Its totient is φ = 29812640.

The previous prime is 51427559. The next prime is 51427573. The reversal of 51427563 is 36572415.

51427563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51427563 - 2² = 51427559 is a prime.

It is a super-2 number, since 2×51427563² = 5289588472237938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51427513) 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 15 ways as a sum of consecutive naturals, for example, 33120 + ... + 34637.

It is an arithmetic number, because the mean of its divisors is an integer number (4878576).

Almost surely, 2^51427563 is an apocalyptic number.

51427563 is a deficient number, since it is larger than the sum of its proper divisors (26629653).

51427563 is a wasteful number, since it uses less digits than its factorization.

51427563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67794.

The product of its digits is 25200, while the sum is 33.

The square root of 51427563 is about 7171.3013463388. The cubic root of 51427563 is about 371.8764258872.

Adding to 51427563 its reverse (36572415), we get a palindrome (87999978).

The spelling of 51427563 in words is "fifty-one million, four hundred twenty-seven thousand, five hundred sixty-three".