51994008 has 128 divisors (see below), whose sum is σ = 160128000. Its totient is φ = 15500160.

The previous prime is 51994003. The next prime is 51994043. The reversal of 51994008 is 80049915.

51994008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51994001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187566 + ... + 187842.

It is an arithmetic number, because the mean of its divisors is an integer number (1251000).

Almost surely, 2^51994008 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 51994008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80064000).

51994008 is an abundant number, since it is smaller than the sum of its proper divisors (108133992).

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

51994008 is a wasteful number, since it uses less digits than its factorization.

51994008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 51994008 is about 7210.6870685116. The cubic root of 51994008 is about 373.2367784600.

The spelling of 51994008 in words is "fifty-one million, nine hundred ninety-four thousand, eight".