51396168 has 64 divisors (see below), whose sum is σ = 141989760. Its totient is φ = 15420416.

The previous prime is 51396133. The next prime is 51396179. The reversal of 51396168 is 86169315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6646 + ... + 12122.

It is an arithmetic number, because the mean of its divisors is an integer number (2218590).

Almost surely, 2^51396168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51396168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70994880).

51396168 is an abundant number, since it is smaller than the sum of its proper divisors (90593592).

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

51396168 is a wasteful number, since it uses less digits than its factorization.

51396168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526 (or 5522 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 51396168 is about 7169.1120789119. The cubic root of 51396168 is about 371.8007373117.

The spelling of 51396168 in words is "fifty-one million, three hundred ninety-six thousand, one hundred sixty-eight".