172924245 has 48 divisors (see below), whose sum is σ = 333955440. Its totient is φ = 82188288.

The previous prime is 172924243. The next prime is 172924259. The reversal of 172924245 is 542429271.

It can be written as a sum of positive squares in 8 ways, for example, as 3481956 + 169442289 = 1866^2 + 13017^2 .

It is not a de Polignac number, because 172924245 - 2¹ = 172924243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172924243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11869 + ... + 22061.

It is an arithmetic number, because the mean of its divisors is an integer number (6957405).

Almost surely, 2^172924245 is an apocalyptic number.

172924245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172924245 is a deficient number, since it is larger than the sum of its proper divisors (161031195).

172924245 is a wasteful number, since it uses less digits than its factorization.

172924245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246 (or 10243 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 172924245 is about 13150.0663496425. The cubic root of 172924245 is about 557.1241220806.

The spelling of 172924245 in words is "one hundred seventy-two million, nine hundred twenty-four thousand, two hundred forty-five".