51004216 has 32 divisors (see below), whose sum is σ = 102090240. Its totient is φ = 23804928.

The previous prime is 51004211. The next prime is 51004223. The reversal of 51004216 is 61240015.

It is a junction number, because it is equal to n+sod(n) for n = 51004193 and 51004202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15796 + ... + 18748.

It is an arithmetic number, because the mean of its divisors is an integer number (3190320).

Almost surely, 2^51004216 is an apocalyptic number.

It is an amenable number.

51004216 is an abundant number, since it is smaller than the sum of its proper divisors (51086024).

51004216 is a wasteful number, since it uses less digits than its factorization.

51004216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 51004216 is about 7141.7236014844. The cubic root of 51004216 is about 370.8531954293.

It can be divided in two parts, 5100 and 4216, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 51004216 in words is "fifty-one million, four thousand, two hundred sixteen".