51046320 has 80 divisors (see below), whose sum is σ = 170426592. Its totient is φ = 12564480.

The previous prime is 51046313. The next prime is 51046321. The reversal of 51046320 is 2364015.

It is a happy number.

51046320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (51046321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5061 + ... + 11300.

Almost surely, 2^51046320 is an apocalyptic number.

It is an amenable number.

51046320 is an abundant number, since it is smaller than the sum of its proper divisors (119380272).

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

51046320 is a wasteful number, since it uses less digits than its factorization.

51046320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16390 (or 16384 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51046320 is about 7144.6707411888. The cubic root of 51046320 is about 370.9552138477.

The spelling of 51046320 in words is "fifty-one million, forty-six thousand, three hundred twenty".