170201139 has 4 divisors (see below), whose sum is σ = 226934856. Its totient is φ = 113467424.

The previous prime is 170201137. The next prime is 170201149. The reversal of 170201139 is 931102071.

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

It is a cyclic number.

It is not a de Polignac number, because 170201139 - 2¹ = 170201137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170201137) 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, 28366854 + ... + 28366859.

It is an arithmetic number, because the mean of its divisors is an integer number (56733714).

Almost surely, 2^170201139 is an apocalyptic number.

170201139 is a deficient number, since it is larger than the sum of its proper divisors (56733717).

170201139 is an equidigital number, since it uses as much as digits as its factorization.

170201139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56733716.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 170201139 is about 13046.1158587527. The cubic root of 170201139 is about 554.1842182568.

The spelling of 170201139 in words is "one hundred seventy million, two hundred one thousand, one hundred thirty-nine".