51444396 has 60 divisors (see below), whose sum is σ = 136177272. Its totient is φ = 16932672.

The previous prime is 51444389. The next prime is 51444413. The reversal of 51444396 is 69344415.

51444396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51444396.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 25936 + ... + 27848.

Almost surely, 2^51444396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51444396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68088636).

51444396 is an abundant number, since it is smaller than the sum of its proper divisors (84732876).

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

51444396 is a wasteful number, since it uses less digits than its factorization.

51444396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 2001 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 51444396 is about 7172.4748866761. The cubic root of 51444396 is about 371.9169950079.

The spelling of 51444396 in words is "fifty-one million, four hundred forty-four thousand, three hundred ninety-six".