170542223 has 4 divisors (see below), whose sum is σ = 170630040. Its totient is φ = 170454408.

The previous prime is 170542193. The next prime is 170542231. The reversal of 170542223 is 322245071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322245071 = 29 ⋅11111899.

It is a cyclic number.

It is not a de Polignac number, because 170542223 - 2¹⁶ = 170476687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170542192 and 170542201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170542523) 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, 40928 + ... + 44901.

It is an arithmetic number, because the mean of its divisors is an integer number (42657510).

Almost surely, 2^170542223 is an apocalyptic number.

170542223 is a deficient number, since it is larger than the sum of its proper divisors (87817).

170542223 is an equidigital number, since it uses as much as digits as its factorization.

170542223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87816.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 170542223 is about 13059.1815593474. The cubic root of 170542223 is about 554.5541672937.

Adding to 170542223 its reverse (322245071), we get a palindrome (492787294).

The spelling of 170542223 in words is "one hundred seventy million, five hundred forty-two thousand, two hundred twenty-three".