51012632 has 48 divisors (see below), whose sum is σ = 106134000. Its totient is φ = 22968000.

The previous prime is 51012629. The next prime is 51012649. The reversal of 51012632 is 23621015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145994 + ... + 146342.

It is an arithmetic number, because the mean of its divisors is an integer number (2211125).

Almost surely, 2^51012632 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 51012632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53067000).

51012632 is an abundant number, since it is smaller than the sum of its proper divisors (55121368).

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

51012632 is a wasteful number, since it uses less digits than its factorization.

51012632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51012632 is about 7142.3127906862. The cubic root of 51012632 is about 370.8735919709.

Adding to 51012632 its reverse (23621015), we get a palindrome (74633647).

The spelling of 51012632 in words is "fifty-one million, twelve thousand, six hundred thirty-two".