171248545 has 12 divisors (see below), whose sum is σ = 222522876. Its totient is φ = 126459840.

The previous prime is 171248527. The next prime is 171248551. The reversal of 171248545 is 545842171.

It can be written as a sum of positive squares in 6 ways, for example, as 21455424 + 149793121 = 4632^2 + 12239^2 .

It is not a de Polignac number, because 171248545 - 2¹⁵ = 171215777 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100486 + ... + 102175.

It is an arithmetic number, because the mean of its divisors is an integer number (18543573).

Almost surely, 2^171248545 is an apocalyptic number.

It is an amenable number.

171248545 is a deficient number, since it is larger than the sum of its proper divisors (51274331).

171248545 is a wasteful number, since it uses less digits than its factorization.

171248545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202692 (or 202679 counting only the distinct ones).

The product of its digits is 44800, while the sum is 37.

The square root of 171248545 is about 13086.1967354919. The cubic root of 171248545 is about 555.3186980020.

The spelling of 171248545 in words is "one hundred seventy-one million, two hundred forty-eight thousand, five hundred forty-five".