51444816 has 40 divisors (see below), whose sum is σ = 133202784. Its totient is φ = 17109120.

The previous prime is 51444797. The next prime is 51444817. The reversal of 51444816 is 61844415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444817) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26470 + ... + 28346.

Almost surely, 2^51444816 is an apocalyptic number.

It is an amenable number.

51444816 is an abundant number, since it is smaller than the sum of its proper divisors (81757968).

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

51444816 is a wasteful number, since it uses less digits than its factorization.

51444816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459 (or 2453 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 51444816 is about 7172.5041652132. The cubic root of 51444816 is about 371.9180071344.

The spelling of 51444816 in words is "fifty-one million, four hundred forty-four thousand, eight hundred sixteen".