51442122 has 16 divisors (see below), whose sum is σ = 107357760. Its totient is φ = 16401792.

The previous prime is 51442109. The next prime is 51442129. The reversal of 51442122 is 22124415.

It is not an unprimeable number, because it can be changed into a prime (51442129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186247 + ... + 186522.

It is an arithmetic number, because the mean of its divisors is an integer number (6709860).

Almost surely, 2^51442122 is an apocalyptic number.

51442122 is an abundant number, since it is smaller than the sum of its proper divisors (55915638).

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

51442122 is a wasteful number, since it uses less digits than its factorization.

51442122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372797.

The product of its digits is 640, while the sum is 21.

The square root of 51442122 is about 7172.3163622361. The cubic root of 51442122 is about 371.9115149701.

Adding to 51442122 its reverse (22124415), we get a palindrome (73566537).

The spelling of 51442122 in words is "fifty-one million, four hundred forty-two thousand, one hundred twenty-two".