170157011 has 4 divisors (see below), whose sum is σ = 174307224. Its totient is φ = 166006800.

The previous prime is 170156947. The next prime is 170157017. The reversal of 170157011 is 110751071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110751071 = 4217 ⋅26263.

It is a cyclic number.

It is not a de Polignac number, because 170157011 - 2⁶ = 170156947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170157017) 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, 2075045 + ... + 2075126.

It is an arithmetic number, because the mean of its divisors is an integer number (43576806).

Almost surely, 2^170157011 is an apocalyptic number.

170157011 is a deficient number, since it is larger than the sum of its proper divisors (4150213).

170157011 is an equidigital number, since it uses as much as digits as its factorization.

170157011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150212.

The product of its (nonzero) digits is 245, while the sum is 23.

The square root of 170157011 is about 13044.4245177777. The cubic root of 170157011 is about 554.1363197231.

The spelling of 170157011 in words is "one hundred seventy million, one hundred fifty-seven thousand, eleven".