170144145 has 40 divisors (see below), whose sum is σ = 321066240. Its totient is φ = 85963680.

The previous prime is 170144129. The next prime is 170144159. The reversal of 170144145 is 541441071.

It is not a de Polignac number, because 170144145 - 2⁴ = 170144129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3361 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (8026656).

Almost surely, 2^170144145 is an apocalyptic number.

170144145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

170144145 is a deficient number, since it is larger than the sum of its proper divisors (150922095).

170144145 is a wasteful number, since it uses less digits than its factorization.

170144145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22147 (or 22138 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 170144145 is about 13043.9313475654. The cubic root of 170144145 is about 554.1223528237.

The spelling of 170144145 in words is "one hundred seventy million, one hundred forty-four thousand, one hundred forty-five".