51612112 has 40 divisors (see below), whose sum is σ = 106008840. Its totient is φ = 24299520.

The previous prime is 51612109. The next prime is 51612133. The reversal of 51612112 is 21121615.

It can be written as a sum of positive squares in 4 ways, for example, as 10086976 + 41525136 = 3176^2 + 6444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51612112.

It is a congruent number.

It is an unprimeable number.

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, 17668 + ... + 20380.

It is an arithmetic number, because the mean of its divisors is an integer number (2650221).

Almost surely, 2^51612112 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 51612112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53004420).

51612112 is an abundant number, since it is smaller than the sum of its proper divisors (54396728).

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

51612112 is a wasteful number, since it uses less digits than its factorization.

51612112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2785 counting only the distinct ones).

The product of its digits is 120, while the sum is 19.

The square root of 51612112 is about 7184.1570138743. The cubic root of 51612112 is about 372.3207239059.

Adding to 51612112 its reverse (21121615), we get a palindrome (72733727).

The spelling of 51612112 in words is "fifty-one million, six hundred twelve thousand, one hundred twelve".