51020535 has 16 divisors (see below), whose sum is σ = 82427904. Its totient is φ = 26945952.

The previous prime is 51020533. The next prime is 51020539. The reversal of 51020535 is 53502015.

51020535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51020535 - 2¹ = 51020533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020531) 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 15 ways as a sum of consecutive naturals, for example, 14967 + ... + 18056.

It is an arithmetic number, because the mean of its divisors is an integer number (5151744).

Almost surely, 2^51020535 is an apocalyptic number.

51020535 is a deficient number, since it is larger than the sum of its proper divisors (31407369).

51020535 is a wasteful number, since it uses less digits than its factorization.

51020535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33134.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 51020535 is about 7142.8660214231. The cubic root of 51020535 is about 370.8927431925.

The spelling of 51020535 in words is "fifty-one million, twenty thousand, five hundred thirty-five".