52221173 has 2 divisors, whose sum is σ = 52221174. Its totient is φ = 52221172.

The previous prime is 52221157. The next prime is 52221203. The reversal of 52221173 is 37112225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50951044 + 1270129 = 7138^2 + 1127^2 .

It is a cyclic number.

It is not a de Polignac number, because 52221173 - 2⁴ = 52221157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110586 + 26110587.

It is an arithmetic number, because the mean of its divisors is an integer number (26110587).

Almost surely, 2^52221173 is an apocalyptic number.

It is an amenable number.

52221173 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221173 is an equidigital number, since it uses as much as digits as its factorization.

52221173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 52221173 is about 7226.4218670100. The cubic root of 52221173 is about 373.7795535219.

Adding to 52221173 its reverse (37112225), we get a palindrome (89333398).

The spelling of 52221173 in words is "fifty-two million, two hundred twenty-one thousand, one hundred seventy-three".