51237329 has 12 divisors (see below), whose sum is σ = 60652788. Its totient is φ = 42995040.

The previous prime is 51237317. The next prime is 51237343. The reversal of 51237329 is 92373215.

51237329 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 2907025 + 48330304 = 1705^2 + 6952^2 .

It is not a de Polignac number, because 51237329 - 2⁸ = 51237073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51237295 and 51237304.

It is not an unprimeable number, because it can be changed into a prime (51237349) 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 11 ways as a sum of consecutive naturals, for example, 14714 + ... + 17859.

It is an arithmetic number, because the mean of its divisors is an integer number (5054399).

Almost surely, 2^51237329 is an apocalyptic number.

It is an amenable number.

51237329 is a deficient number, since it is larger than the sum of its proper divisors (9415459).

51237329 is a wasteful number, since it uses less digits than its factorization.

51237329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32608 (or 32597 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 51237329 is about 7158.0254959032. The cubic root of 51237329 is about 371.4173274069.

The spelling of 51237329 in words is "fifty-one million, two hundred thirty-seven thousand, three hundred twenty-nine".