51671123 has 16 divisors (see below), whose sum is σ = 60054720. Its totient is φ = 43545600.

The previous prime is 51671119. The next prime is 51671149. The reversal of 51671123 is 32117615.

It is not a de Polignac number, because 51671123 - 2² = 51671119 is a prime.

It is a super-2 number, since 2×51671123² = 5339809904162258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51671092 and 51671101.

It is not an unprimeable number, because it can be changed into a prime (51671153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183743 + ... + 184023.

It is an arithmetic number, because the mean of its divisors is an integer number (3753420).

Almost surely, 2^51671123 is an apocalyptic number.

51671123 is a deficient number, since it is larger than the sum of its proper divisors (8383597).

51671123 is a wasteful number, since it uses less digits than its factorization.

51671123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its digits is 1260, while the sum is 26.

The square root of 51671123 is about 7188.2628638636. The cubic root of 51671123 is about 372.4625681949.

Adding to 51671123 its reverse (32117615), we get a palindrome (83788738).

The spelling of 51671123 in words is "fifty-one million, six hundred seventy-one thousand, one hundred twenty-three".