51611163 has 16 divisors (see below), whose sum is σ = 72643200. Its totient is φ = 32503680.

The previous prime is 51611159. The next prime is 51611171. The reversal of 51611163 is 36111615.

It is not a de Polignac number, because 51611163 - 2² = 51611159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51611363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22803 + ... + 24963.

It is an arithmetic number, because the mean of its divisors is an integer number (4540200).

Almost surely, 2^51611163 is an apocalyptic number.

51611163 is a deficient number, since it is larger than the sum of its proper divisors (21032037).

51611163 is a wasteful number, since it uses less digits than its factorization.

51611163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602.

The product of its digits is 540, while the sum is 24.

The square root of 51611163 is about 7184.0909654597. The cubic root of 51611163 is about 372.3184419187.

Adding to 51611163 its reverse (36111615), we get a palindrome (87722778).

The spelling of 51611163 in words is "fifty-one million, six hundred eleven thousand, one hundred sixty-three".