51322501 has 2 divisors, whose sum is σ = 51322502. Its totient is φ = 51322500.

The previous prime is 51322493. The next prime is 51322519. The reversal of 51322501 is 10522315.

51322501 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., 34928100 + 16394401 = 5910^2 + 4049^2 .

It is a cyclic number.

It is not a de Polignac number, because 51322501 - 2³ = 51322493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51322571) 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, 25661250 + 25661251.

It is an arithmetic number, because the mean of its divisors is an integer number (25661251).

Almost surely, 2^51322501 is an apocalyptic number.

It is an amenable number.

51322501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322501 is an equidigital number, since it uses as much as digits as its factorization.

51322501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51322501 is about 7163.9724315494. The cubic root of 51322501 is about 371.6230162719.

Adding to 51322501 its reverse (10522315), we get a palindrome (61844816).

The spelling of 51322501 in words is "fifty-one million, three hundred twenty-two thousand, five hundred one".