212545573 has 2 divisors, whose sum is σ = 212545574. Its totient is φ = 212545572.

The previous prime is 212545561. The next prime is 212545589. The reversal of 212545573 is 375545212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212488929 + 56644 = 14577^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 212545573 - 2⁹ = 212545061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212545513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106272786 + 106272787.

It is an arithmetic number, because the mean of its divisors is an integer number (106272787).

Almost surely, 2^212545573 is an apocalyptic number.

It is an amenable number.

212545573 is a deficient number, since it is larger than the sum of its proper divisors (1).

212545573 is an equidigital number, since it uses as much as digits as its factorization.

212545573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 34.

The square root of 212545573 is about 14578.9427943181. The cubic root of 212545573 is about 596.7842522160.

The spelling of 212545573 in words is "two hundred twelve million, five hundred forty-five thousand, five hundred seventy-three".