200172137 has 8 divisors (see below), whose sum is σ = 218583552. Its totient is φ = 181796400.

The previous prime is 200172131. The next prime is 200172139. The reversal of 200172137 is 731271002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200172137 - 2¹⁰ = 200171113 is a prime.

It is a super-2 number, since 2×200172137² = 80137768862293538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (200172131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3587 + ... + 20327.

It is an arithmetic number, because the mean of its divisors is an integer number (27322944).

Almost surely, 2^200172137 is an apocalyptic number.

It is an amenable number.

200172137 is a deficient number, since it is larger than the sum of its proper divisors (18411415).

200172137 is a wasteful number, since it uses less digits than its factorization.

200172137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17839.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 200172137 is about 14148.2202767698. The cubic root of 200172137 is about 584.9712767449.

The spelling of 200172137 in words is "two hundred million, one hundred seventy-two thousand, one hundred thirty-seven".