172044145 has 48 divisors (see below), whose sum is σ = 272341440. Its totient is φ = 103130496.

The previous prime is 172044133. The next prime is 172044151. The reversal of 172044145 is 541440271.

It is not a de Polignac number, because 172044145 - 2⁵ = 172044113 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 59094 + ... + 61936.

It is an arithmetic number, because the mean of its divisors is an integer number (5673780).

Almost surely, 2^172044145 is an apocalyptic number.

It is an amenable number.

172044145 is a deficient number, since it is larger than the sum of its proper divisors (100297295).

172044145 is a wasteful number, since it uses less digits than its factorization.

172044145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 172044145 is about 13116.5599529755. The cubic root of 172044145 is about 556.1773507780.

The spelling of 172044145 in words is "one hundred seventy-two million, forty-four thousand, one hundred forty-five".