51442112 has 28 divisors (see below), whose sum is σ = 102900480. Its totient is φ = 25514496.

The previous prime is 51442109. The next prime is 51442129. The reversal of 51442112 is 21124415.

It is a happy number.

51442112 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4964 + ... + 11292.

Almost surely, 2^51442112 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 51442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51450240).

51442112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51442112 is a wasteful number, since it uses less digits than its factorization.

51442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468 (or 6458 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 51442112 is about 7172.3156651112. The cubic root of 51442112 is about 371.9114908711.

Adding to 51442112 its reverse (21124415), we get a palindrome (72566527).

The spelling of 51442112 in words is "fifty-one million, four hundred forty-two thousand, one hundred twelve".