51492168 has 192 divisors, whose sum is σ = 178214400. Its totient is φ = 13063680.

The previous prime is 51492157. The next prime is 51492173. The reversal of 51492168 is 86129415.

51492168 is a `hidden beast` number, since 5 + 1 + 492 + 168 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 189873 + ... + 190143.

It is an arithmetic number, because the mean of its divisors is an integer number (928200).

Almost surely, 2^51492168 is an apocalyptic number.

51492168 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51492168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89107200).

51492168 is an abundant number, since it is smaller than the sum of its proper divisors (126722232).

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

51492168 is a wasteful number, since it uses less digits than its factorization.

51492168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 325 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 51492168 is about 7175.8043451588. The cubic root of 51492168 is about 372.0320818672.

The spelling of 51492168 in words is "fifty-one million, four hundred ninety-two thousand, one hundred sixty-eight".