51320911 has 8 divisors (see below), whose sum is σ = 51807600. Its totient is φ = 50836800.

The previous prime is 51320879. The next prime is 51320939. The reversal of 51320911 is 11902315.

51320911 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 51320911 - 2⁵ = 51320879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51320411) 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, 72861 + ... + 73561.

It is an arithmetic number, because the mean of its divisors is an integer number (6475950).

Almost surely, 2^51320911 is an apocalyptic number.

51320911 is a deficient number, since it is larger than the sum of its proper divisors (486689).

51320911 is a wasteful number, since it uses less digits than its factorization.

51320911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 51320911 is about 7163.8614587386. The cubic root of 51320911 is about 371.6191785354.

The spelling of 51320911 in words is "fifty-one million, three hundred twenty thousand, nine hundred eleven".