172000045 has 48 divisors (see below), whose sum is σ = 249030720. Its totient is φ = 113654016.

The previous prime is 172000021. The next prime is 172000057. The reversal of 172000045 is 540000271.

It is not a de Polignac number, because 172000045 - 2⁷ = 171999917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171999986 and 172000031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1055134 + ... + 1055296.

It is an arithmetic number, because the mean of its divisors is an integer number (5188140).

Almost surely, 2^172000045 is an apocalyptic number.

It is an amenable number.

172000045 is a deficient number, since it is larger than the sum of its proper divisors (77030675).

172000045 is a wasteful number, since it uses less digits than its factorization.

172000045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 172000045 is about 13114.8787642128. The cubic root of 172000045 is about 556.1298251518.

The spelling of 172000045 in words is "one hundred seventy-two million, forty-five", and thus it is an aban number.