51825216 has 28 divisors (see below), whose sum is σ = 137121392. Its totient is φ = 17275008.

The previous prime is 51825209. The next prime is 51825247. The reversal of 51825216 is 61252815.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134770 + ... + 135153.

Almost surely, 2^51825216 is an apocalyptic number.

It is an amenable number.

51825216 is an abundant number, since it is smaller than the sum of its proper divisors (85296176).

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

51825216 is a wasteful number, since it uses less digits than its factorization.

51825216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269938 (or 269928 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 51825216 is about 7198.9732601254. The cubic root of 51825216 is about 372.8324518773.

The spelling of 51825216 in words is "fifty-one million, eight hundred twenty-five thousand, two hundred sixteen".