201172606 has 4 divisors (see below), whose sum is σ = 301758912. Its totient is φ = 100586302.

The previous prime is 201172541. The next prime is 201172613. The reversal of 201172606 is 606271102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50293150 + ... + 50293153.

It is an arithmetic number, because the mean of its divisors is an integer number (75439728).

Almost surely, 2^201172606 is an apocalyptic number.

201172606 is a deficient number, since it is larger than the sum of its proper divisors (100586306).

201172606 is a wasteful number, since it uses less digits than its factorization.

201172606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100586305.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 201172606 is about 14183.5329167313. The cubic root of 201172606 is about 585.9442281719.

The spelling of 201172606 in words is "two hundred one million, one hundred seventy-two thousand, six hundred six".