252006109 has 2 divisors, whose sum is σ = 252006110. Its totient is φ = 252006108.

The previous prime is 252006107. The next prime is 252006121. The reversal of 252006109 is 901600252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250747225 + 1258884 = 15835^2 + 1122^2 .

It is a cyclic number.

It is not a de Polignac number, because 252006109 - 2¹ = 252006107 is a prime.

Together with 252006107, 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 (252006103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126003054 + 126003055.

It is an arithmetic number, because the mean of its divisors is an integer number (126003055).

Almost surely, 2^252006109 is an apocalyptic number.

It is an amenable number.

252006109 is a deficient number, since it is larger than the sum of its proper divisors (1).

252006109 is an equidigital number, since it uses as much as digits as its factorization.

252006109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 252006109 is about 15874.7002806352. The cubic root of 252006109 is about 631.6410637774.

The spelling of 252006109 in words is "two hundred fifty-two million, six thousand, one hundred nine".