51629706 has 24 divisors (see below), whose sum is σ = 112153860. Its totient is φ = 17165376.

The previous prime is 51629693. The next prime is 51629741. The reversal of 51629706 is 60792615.

51629706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42575625 + 9054081 = 6525^2 + 3009^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3856 + ... + 10868.

Almost surely, 2^51629706 is an apocalyptic number.

51629706 is an abundant number, since it is smaller than the sum of its proper divisors (60524154).

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

51629706 is a wasteful number, since it uses less digits than its factorization.

51629706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7430 (or 7427 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 51629706 is about 7185.3814095008. The cubic root of 51629706 is about 372.3630257763.

The spelling of 51629706 in words is "fifty-one million, six hundred twenty-nine thousand, seven hundred six".