51445312 has 28 divisors (see below), whose sum is σ = 107462320. Its totient is φ = 24368256.

The previous prime is 51445301. The next prime is 51445321. The reversal of 51445312 is 21354415.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19938 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (3837940).

Almost surely, 2^51445312 is an apocalyptic number.

It is an amenable number.

51445312 is an abundant number, since it is smaller than the sum of its proper divisors (56017008).

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

51445312 is a wasteful number, since it uses less digits than its factorization.

51445312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42338 (or 42328 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 51445312 is about 7172.5387416172. The cubic root of 51445312 is about 371.9192024006.

Adding to 51445312 its reverse (21354415), we get a palindrome (72799727).

The spelling of 51445312 in words is "fifty-one million, four hundred forty-five thousand, three hundred twelve".