51322573 has 2 divisors, whose sum is σ = 51322574. Its totient is φ = 51322572.

The previous prime is 51322571. The next prime is 51322597. The reversal of 51322573 is 37522315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44129449 + 7193124 = 6643^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 51322573 - 2¹ = 51322571 is a prime.

Together with 51322571, it forms a pair of twin primes.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 25661286 + 25661287.

It is an arithmetic number, because the mean of its divisors is an integer number (25661287).

Almost surely, 2^51322573 is an apocalyptic number.

It is an amenable number.

51322573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322573 is an equidigital number, since it uses as much as digits as its factorization.

51322573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 28.

The square root of 51322573 is about 7163.9774566926. The cubic root of 51322573 is about 371.6231900543.

Adding to 51322573 its reverse (37522315), we get a palindrome (88844888).

It can be divided in two parts, 51 and 322573, that added together give a square (322624 = 568²).

The spelling of 51322573 in words is "fifty-one million, three hundred twenty-two thousand, five hundred seventy-three".