212573 has 2 divisors, whose sum is σ = 212574. Its totient is φ = 212572.

The previous prime is 212561. The next prime is 212579. The reversal of 212573 is 375212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209764 + 2809 = 458^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 212573 - 2⁴ = 212557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106286 + 106287.

It is an arithmetic number, because the mean of its divisors is an integer number (106287).

2²¹²⁵⁷³ is an apocalyptic number.

It is an amenable number.

212573 is a deficient number, since it is larger than the sum of its proper divisors (1).

212573 is an equidigital number, since it uses as much as digits as its factorization.

212573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 20.

The square root of 212573 is about 461.0563956828. The cubic root of 212573 is about 59.6809920904.

Adding to 212573 its reverse (375212), we get a palindrome (587785).

The spelling of 212573 in words is "two hundred twelve thousand, five hundred seventy-three".