51033216 has 64 divisors (see below), whose sum is σ = 145998720. Its totient is φ = 15700992.

The previous prime is 51033209. The next prime is 51033239. The reversal of 51033216 is 61233015.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 51033192 and 51033201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120 + ... + 10103.

It is an arithmetic number, because the mean of its divisors is an integer number (2281230).

Almost surely, 2^51033216 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 51033216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72999360).

51033216 is an abundant number, since it is smaller than the sum of its proper divisors (94965504).

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

51033216 is a wasteful number, since it uses less digits than its factorization.

51033216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10253 (or 10241 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51033216 is about 7143.7536351697. The cubic root of 51033216 is about 370.9234687377.

The spelling of 51033216 in words is "fifty-one million, thirty-three thousand, two hundred sixteen".