51203216 has 10 divisors (see below), whose sum is σ = 99206262. Its totient is φ = 25601600.

The previous prime is 51203203. The next prime is 51203249. The reversal of 51203216 is 61230215.

It can be written as a sum of positive squares in only one way, i.e., 46185616 + 5017600 = 6796^2 + 2240^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600085 + ... + 1600116.

Almost surely, 2^51203216 is an apocalyptic number.

It is an amenable number.

51203216 is a deficient number, since it is larger than the sum of its proper divisors (48003046).

51203216 is a wasteful number, since it uses less digits than its factorization.

51203216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200209 (or 3200203 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51203216 is about 7155.6422493023. The cubic root of 51203216 is about 371.3348811875.

The spelling of 51203216 in words is "fifty-one million, two hundred three thousand, two hundred sixteen".