51033425221 has 2 divisors, whose sum is σ = 51033425222. Its totient is φ = 51033425220.

The previous prime is 51033425159. The next prime is 51033425257. The reversal of 51033425221 is 12252433015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50974350625 + 59074596 = 225775^2 + 7686^2 .

It is a cyclic number.

It is not a de Polignac number, because 51033425221 - 2¹⁵ = 51033392453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51033425221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51033425321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25516712610 + 25516712611.

It is an arithmetic number, because the mean of its divisors is an integer number (25516712611).

Almost surely, 2^51033425221 is an apocalyptic number.

It is an amenable number.

51033425221 is a deficient number, since it is larger than the sum of its proper divisors (1).

51033425221 is an equidigital number, since it uses as much as digits as its factorization.

51033425221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 51033425221 its reverse (12252433015), we get a palindrome (63285858236).

The spelling of 51033425221 in words is "fifty-one billion, thirty-three million, four hundred twenty-five thousand, two hundred twenty-one".