51438835 has 16 divisors (see below), whose sum is σ = 71398656. Its totient is φ = 34845408.

The previous prime is 51438817. The next prime is 51438847. The reversal of 51438835 is 53883415.

51438835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51438835 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51438794 and 51438803.

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 15 ways as a sum of consecutive naturals, for example, 5949 + ... + 11758.

It is an arithmetic number, because the mean of its divisors is an integer number (4462416).

Almost surely, 2^51438835 is an apocalyptic number.

51438835 is a deficient number, since it is larger than the sum of its proper divisors (19959821).

51438835 is a wasteful number, since it uses less digits than its factorization.

51438835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17802.

The product of its digits is 57600, while the sum is 37.

The square root of 51438835 is about 7172.0872136359. The cubic root of 51438835 is about 371.9035934514.

The spelling of 51438835 in words is "fifty-one million, four hundred thirty-eight thousand, eight hundred thirty-five".