172248845 has 8 divisors (see below), whose sum is σ = 218857464. Its totient is φ = 129693184.

The previous prime is 172248827. The next prime is 172248847. The reversal of 172248845 is 548842271.

It can be written as a sum of positive squares in 4 ways, for example, as 32512804 + 139736041 = 5702^2 + 11821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172248845 - 2¹⁴ = 172232461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172248847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013144 + ... + 1013313.

It is an arithmetic number, because the mean of its divisors is an integer number (27357183).

Almost surely, 2^172248845 is an apocalyptic number.

It is an amenable number.

172248845 is a deficient number, since it is larger than the sum of its proper divisors (46608619).

172248845 is a wasteful number, since it uses less digits than its factorization.

172248845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026479.

The product of its digits is 143360, while the sum is 41.

The square root of 172248845 is about 13124.3607463373. The cubic root of 172248845 is about 556.3978453113.

The spelling of 172248845 in words is "one hundred seventy-two million, two hundred forty-eight thousand, eight hundred forty-five".