745171 has 4 divisors (see below), whose sum is σ = 851632. Its totient is φ = 638712.

The previous prime is 745141. The next prime is 745181. The reversal of 745171 is 171547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171547 = 17 ⋅10091.

It is a cyclic number.

It is not a de Polignac number, because 745171 - 2⁹ = 744659 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745141) 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, 53220 + ... + 53233.

It is an arithmetic number, because the mean of its divisors is an integer number (212908).

2⁷⁴⁵¹⁷¹ is an apocalyptic number.

745171 is a deficient number, since it is larger than the sum of its proper divisors (106461).

745171 is a wasteful number, since it uses less digits than its factorization.

745171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106460.

The product of its digits is 980, while the sum is 25.

The square root of 745171 is about 863.2328770384. The cubic root of 745171 is about 90.6606124009.

The spelling of 745171 in words is "seven hundred forty-five thousand, one hundred seventy-one".