170153 has 4 divisors (see below), whose sum is σ = 180180. Its totient is φ = 160128.

The previous prime is 170141. The next prime is 170167. The reversal of 170153 is 351071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351071 = 7 ⋅50153.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 12544 = 397^2 + 112^2 .

It is a cyclic number.

It is not a de Polignac number, because 170153 - 2¹⁰ = 169129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 10009 = 170153 / (1 + 7 + 0 + 1 + 5 + 3).

It is an Ulam number.

It is a Duffinian number.

170153 is a modest number, since divided by 153 gives 17 as remainder.

It is not an unprimeable number, because it can be changed into a prime (170123) 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, 4988 + ... + 5021.

It is an arithmetic number, because the mean of its divisors is an integer number (45045).

2¹⁷⁰¹⁵³ is an apocalyptic number.

It is an amenable number.

170153 is a deficient number, since it is larger than the sum of its proper divisors (10027).

170153 is a wasteful number, since it uses less digits than its factorization.

170153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 170153 is about 412.4960605872. The cubic root of 170153 is about 55.4131965591.

It can be divided in two parts, 170 and 153, that added together give a palindrome (323).

The spelling of 170153 in words is "one hundred seventy thousand, one hundred fifty-three".