51236688 has 40 divisors (see below), whose sum is σ = 132624448. Its totient is φ = 17044992.

The previous prime is 51236687. The next prime is 51236701. The reversal of 51236688 is 88663215.

It is a happy number.

51236688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51236683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38856 + ... + 40152.

Almost surely, 2^51236688 is an apocalyptic number.

It is an amenable number.

51236688 is an abundant number, since it is smaller than the sum of its proper divisors (81387760).

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

51236688 is a wasteful number, since it uses less digits than its factorization.

51236688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2125 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 51236688 is about 7157.9807208458. The cubic root of 51236688 is about 371.4157785394.

It can be divided in two parts, 5123 and 6688, that added together give a palindrome (11811).

The spelling of 51236688 in words is "fifty-one million, two hundred thirty-six thousand, six hundred eighty-eight".