51222733 has 2 divisors, whose sum is σ = 51222734. Its totient is φ = 51222732.

The previous prime is 51222709. The next prime is 51222767. The reversal of 51222733 is 33722215.

51222733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50722884 + 499849 = 7122^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 51222733 - 2¹⁷ = 51091661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51222698 and 51222707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51222533) 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 as a sum of consecutive naturals, namely, 25611366 + 25611367.

It is an arithmetic number, because the mean of its divisors is an integer number (25611367).

Almost surely, 2^51222733 is an apocalyptic number.

It is an amenable number.

51222733 is a deficient number, since it is larger than the sum of its proper divisors (1).

51222733 is an equidigital number, since it uses as much as digits as its factorization.

51222733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 51222733 is about 7157.0058683782. The cubic root of 51222733 is about 371.3820554526.

Adding to 51222733 its reverse (33722215), we get a palindrome (84944948).

It can be divided in two parts, 51 and 222733, that added together give a square (222784 = 472²).

The spelling of 51222733 in words is "fifty-one million, two hundred twenty-two thousand, seven hundred thirty-three".