51359953 has 4 divisors (see below), whose sum is σ = 52063588. Its totient is φ = 50656320.

The previous prime is 51359947. The next prime is 51359977. The reversal of 51359953 is 35995315.

51359953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35995315 = 5 ⋅7199063.

It can be written as a sum of positive squares in 2 ways, for example, as 25887744 + 25472209 = 5088^2 + 5047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51359953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51359923) 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 3 ways as a sum of consecutive naturals, for example, 351708 + ... + 351853.

It is an arithmetic number, because the mean of its divisors is an integer number (13015897).

Almost surely, 2^51359953 is an apocalyptic number.

It is an amenable number.

51359953 is a deficient number, since it is larger than the sum of its proper divisors (703635).

51359953 is an equidigital number, since it uses as much as digits as its factorization.

51359953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703634.

The product of its digits is 91125, while the sum is 40.

The square root of 51359953 is about 7166.5858677616. The cubic root of 51359953 is about 371.7133901547.

The spelling of 51359953 in words is "fifty-one million, three hundred fifty-nine thousand, nine hundred fifty-three".