206172301 has 4 divisors (see below), whose sum is σ = 208063900. Its totient is φ = 204280704.

The previous prime is 206172293. The next prime is 206172331. The reversal of 206172301 is 103271602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139358025 + 66814276 = 11805^2 + 8174^2 .

It is a cyclic number.

It is not a de Polignac number, because 206172301 - 2³ = 206172293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206172331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945636 + ... + 945853.

It is an arithmetic number, because the mean of its divisors is an integer number (52015975).

Almost surely, 2^206172301 is an apocalyptic number.

It is an amenable number.

206172301 is a deficient number, since it is larger than the sum of its proper divisors (1891599).

206172301 is a wasteful number, since it uses less digits than its factorization.

206172301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891598.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 206172301 is about 14358.7012295681. The cubic root of 206172301 is about 590.7586725840.

The spelling of 206172301 in words is "two hundred six million, one hundred seventy-two thousand, three hundred one".