51651169 has 8 divisors (see below), whose sum is σ = 53988480. Its totient is φ = 49321536.

The previous prime is 51651161. The next prime is 51651181. The reversal of 51651169 is 96115615.

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

It is a cyclic number.

It is not a de Polignac number, because 51651169 - 2³ = 51651161 is a prime.

It is a super-2 number, since 2×51651169² = 5335686518133122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51651161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15177 + ... + 18265.

It is an arithmetic number, because the mean of its divisors is an integer number (6748560).

Almost surely, 2^51651169 is an apocalyptic number.

It is an amenable number.

51651169 is a deficient number, since it is larger than the sum of its proper divisors (2337311).

51651169 is a wasteful number, since it uses less digits than its factorization.

51651169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839.

The product of its digits is 8100, while the sum is 34.

The square root of 51651169 is about 7186.8747728063. The cubic root of 51651169 is about 372.4146170083.

The spelling of 51651169 in words is "fifty-one million, six hundred fifty-one thousand, one hundred sixty-nine".