51390333 has 6 divisors (see below), whose sum is σ = 74230494. Its totient is φ = 34260216.

The previous prime is 51390331. The next prime is 51390347. The reversal of 51390333 is 33309315.

51390333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37417689 + 13972644 = 6117^2 + 3738^2 .

It is not a de Polignac number, because 51390333 - 2¹ = 51390331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51390297 and 51390306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51390331) 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 5 ways as a sum of consecutive naturals, for example, 2855010 + ... + 2855027.

It is an arithmetic number, because the mean of its divisors is an integer number (12371749).

Almost surely, 2^51390333 is an apocalyptic number.

It is an amenable number.

51390333 is a deficient number, since it is larger than the sum of its proper divisors (22840161).

51390333 is a wasteful number, since it uses less digits than its factorization.

51390333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710043 (or 5710040 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 27.

The square root of 51390333 is about 7168.7051131986. The cubic root of 51390333 is about 371.7866666168.

Adding to 51390333 its reverse (33309315), we get a palindrome (84699648).

The spelling of 51390333 in words is "fifty-one million, three hundred ninety thousand, three hundred thirty-three".