51339535 has 16 divisors (see below), whose sum is σ = 68142816. Its totient is φ = 36885888.

The previous prime is 51339523. The next prime is 51339551. The reversal of 51339535 is 53593315.

51339535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-51339535 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51339535.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 8269 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (4258926).

Almost surely, 2^51339535 is an apocalyptic number.

51339535 is a deficient number, since it is larger than the sum of its proper divisors (16803281).

51339535 is a wasteful number, since it uses less digits than its factorization.

51339535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402.

The product of its digits is 30375, while the sum is 34.

The square root of 51339535 is about 7165.1611984658. The cubic root of 51339535 is about 371.6641257666.

The spelling of 51339535 in words is "fifty-one million, three hundred thirty-nine thousand, five hundred thirty-five".