51235232 has 48 divisors (see below), whose sum is σ = 104809320. Its totient is φ = 24634368.

The previous prime is 51235207. The next prime is 51235241. The reversal of 51235232 is 23253215.

It can be written as a sum of positive squares in 4 ways, for example, as 51208336 + 26896 = 7156^2 + 164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51235198 and 51235207.

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, 128858 + ... + 129254.

Almost surely, 2^51235232 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 51235232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52404660).

51235232 is an abundant number, since it is smaller than the sum of its proper divisors (53574088).

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

51235232 is a wasteful number, since it uses less digits than its factorization.

51235232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 545 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 51235232 is about 7157.8790154626. The cubic root of 51235232 is about 371.4122603150.

Adding to 51235232 its reverse (23253215), we get a palindrome (74488447).

The spelling of 51235232 in words is "fifty-one million, two hundred thirty-five thousand, two hundred thirty-two".