51101171 has 4 divisors (see below), whose sum is σ = 55746744. Its totient is φ = 46455600.

The previous prime is 51101159. The next prime is 51101179. The reversal of 51101171 is 17110115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51101171 is a prime.

It is a super-2 number, since 2×51101171² = 5222659355142482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51101179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322770 + ... + 2322791.

It is an arithmetic number, because the mean of its divisors is an integer number (13936686).

Almost surely, 2^51101171 is an apocalyptic number.

51101171 is a deficient number, since it is larger than the sum of its proper divisors (4645573).

51101171 is a wasteful number, since it uses less digits than its factorization.

51101171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645572.

The product of its (nonzero) digits is 35, while the sum is 17.

The square root of 51101171 is about 7148.5083059335. The cubic root of 51101171 is about 371.0880342668.

Adding to 51101171 its reverse (17110115), we get a palindrome (68211286).

The spelling of 51101171 in words is "fifty-one million, one hundred one thousand, one hundred seventy-one".