252209 has 2 divisors, whose sum is σ = 252210. Its totient is φ = 252208.

The previous prime is 252193. The next prime is 252223. The reversal of 252209 is 902252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250000 + 2209 = 500^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 252209 - 2⁴ = 252193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126104 + 126105.

It is an arithmetic number, because the mean of its divisors is an integer number (126105).

2²⁵²²⁰⁹ is an apocalyptic number.

It is an amenable number.

252209 is a deficient number, since it is larger than the sum of its proper divisors (1).

252209 is an equidigital number, since it uses as much as digits as its factorization.

252209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 252209 is about 502.2041417591. The cubic root of 252209 is about 63.1810530450.

It can be divided in two parts, 25 and 2209, that multiplied together give a square (55225 = 235²).

The spelling of 252209 in words is "two hundred fifty-two thousand, two hundred nine".