51670164 has 48 divisors (see below), whose sum is σ = 148389248. Its totient is φ = 13627008.

The previous prime is 51670163. The next prime is 51670183. The reversal of 51670164 is 46107615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51670163) 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, 22567 + ... + 24750.

Almost surely, 2^51670164 is an apocalyptic number.

It is an amenable number.

51670164 is an abundant number, since it is smaller than the sum of its proper divisors (96719084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51670164 is a wasteful number, since it uses less digits than its factorization.

51670164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47344 (or 47342 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 51670164 is about 7188.1961575906. The cubic root of 51670164 is about 372.4602639174.

Adding to 51670164 its reverse (46107615), we get a palindrome (97777779).

The spelling of 51670164 in words is "fifty-one million, six hundred seventy thousand, one hundred sixty-four".