51671164 has 6 divisors (see below), whose sum is σ = 90424544. Its totient is φ = 25835580.

The previous prime is 51671153. The next prime is 51671201. The reversal of 51671164 is 46117615.

It is a super-2 number, since 2×51671164² = 5339818378229792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458892 + ... + 6458899.

Almost surely, 2^51671164 is an apocalyptic number.

It is an amenable number.

51671164 is a deficient number, since it is larger than the sum of its proper divisors (38753380).

51671164 is a wasteful number, since it uses less digits than its factorization.

51671164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917795 (or 12917793 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 51671164 is about 7188.2657157342. The cubic root of 51671164 is about 372.4626667087.

Adding to 51671164 its reverse (46117615), we get a palindrome (97788779).

The spelling of 51671164 in words is "fifty-one million, six hundred seventy-one thousand, one hundred sixty-four".