207252209 has 4 divisors (see below), whose sum is σ = 218160240. Its totient is φ = 196344180.

The previous prime is 207252193. The next prime is 207252211. The reversal of 207252209 is 902252702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 207252209 - 2⁴ = 207252193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207252229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5453987 + ... + 5454024.

It is an arithmetic number, because the mean of its divisors is an integer number (54540060).

Almost surely, 2^207252209 is an apocalyptic number.

It is an amenable number.

207252209 is a deficient number, since it is larger than the sum of its proper divisors (10908031).

207252209 is a wasteful number, since it uses less digits than its factorization.

207252209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908030.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 207252209 is about 14396.2567704247. The cubic root of 207252209 is about 591.7883200840.

The spelling of 207252209 in words is "two hundred seven million, two hundred fifty-two thousand, two hundred nine".