170045427 has 4 divisors (see below), whose sum is σ = 226727240. Its totient is φ = 113363616.

The previous prime is 170045423. The next prime is 170045437. The reversal of 170045427 is 724540071.

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

It is not a de Polignac number, because 170045427 - 2² = 170045423 is a prime.

It is a super-2 number, since 2×170045427² = 57830894487224658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170045394 and 170045403.

It is not an unprimeable number, because it can be changed into a prime (170045423) 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, 28340902 + ... + 28340907.

It is an arithmetic number, because the mean of its divisors is an integer number (56681810).

Almost surely, 2^170045427 is an apocalyptic number.

170045427 is a deficient number, since it is larger than the sum of its proper divisors (56681813).

170045427 is an equidigital number, since it uses as much as digits as its factorization.

170045427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56681812.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 170045427 is about 13040.1467399719. The cubic root of 170045427 is about 554.0151644291.

Adding to 170045427 its reverse (724540071), we get a palindrome (894585498).

The spelling of 170045427 in words is "one hundred seventy million, forty-five thousand, four hundred twenty-seven".