51906535 has 8 divisors (see below), whose sum is σ = 62670960. Its totient is φ = 41269824.

The previous prime is 51906529. The next prime is 51906539. The reversal of 51906535 is 53560915.

51906535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51906535 - 2¹¹ = 51904487 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51906535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51906539) 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, 31030 + ... + 32659.

It is an arithmetic number, because the mean of its divisors is an integer number (7833870).

Almost surely, 2^51906535 is an apocalyptic number.

51906535 is a deficient number, since it is larger than the sum of its proper divisors (10764425).

51906535 is a wasteful number, since it uses less digits than its factorization.

51906535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63857.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 51906535 is about 7204.6190044998. The cubic root of 51906535 is about 373.0273539011.

It can be divided in two parts, 51906 and 535, that added together give a square (52441 = 229²).

The spelling of 51906535 in words is "fifty-one million, nine hundred six thousand, five hundred thirty-five".