51203313 has 32 divisors (see below), whose sum is σ = 90470400. Its totient is φ = 27984528.

The previous prime is 51203311. The next prime is 51203323. The reversal of 51203313 is 31330215.

51203313 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 51203313 - 2¹ = 51203311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203311) 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 31 ways as a sum of consecutive naturals, for example, 1543 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (2827200).

Almost surely, 2^51203313 is an apocalyptic number.

It is an amenable number.

51203313 is a deficient number, since it is larger than the sum of its proper divisors (39267087).

51203313 is a wasteful number, since it uses less digits than its factorization.

51203313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11818 (or 11812 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 51203313 is about 7155.6490271673. The cubic root of 51203313 is about 371.3351156745.

Adding to 51203313 its reverse (31330215), we get a palindrome (82533528).

The spelling of 51203313 in words is "fifty-one million, two hundred three thousand, three hundred thirteen".