51064812 has 36 divisors (see below), whose sum is σ = 133247296. Its totient is φ = 16472160.

The previous prime is 51064789. The next prime is 51064831. The reversal of 51064812 is 21846015.

51064812 is a `hidden beast` number, since 5 + 1 + 0 + 648 + 12 = 666.

It is a Cunningham number, because it is equal to 371³+1.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21763 + ... + 23994.

Almost surely, 2^51064812 is an apocalyptic number.

It is an amenable number.

51064812 is an abundant number, since it is smaller than the sum of its proper divisors (82182484).

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

51064812 is a wasteful number, since it uses less digits than its factorization.

51064812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45798 (or 45793 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 51064812 is about 7145.9647354294. The cubic root of 51064812 is about 371.0000024218. Note that the first 5 decimals are identical.

The spelling of 51064812 in words is "fifty-one million, sixty-four thousand, eight hundred twelve".