51290112 has 56 divisors (see below), whose sum is σ = 136830816. Its totient is φ = 17088512.

The previous prime is 51290053. The next prime is 51290119. The reversal of 51290112 is 21109215.

It is not an unprimeable number, because it can be changed into a prime (51290119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23533 + ... + 25619.

Almost surely, 2^51290112 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 51290112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68415408).

51290112 is an abundant number, since it is smaller than the sum of its proper divisors (85540704).

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

51290112 is an equidigital number, since it uses as much as digits as its factorization.

51290112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 51290112 is about 7161.7115272817. The cubic root of 51290112 is about 371.5448242472.

Adding to 51290112 its reverse (21109215), we get a palindrome (72399327).

The spelling of 51290112 in words is "fifty-one million, two hundred ninety thousand, one hundred twelve".