172084045 has 32 divisors (see below), whose sum is σ = 259246080. Its totient is φ = 106920000.

The previous prime is 172084043. The next prime is 172084051. The reversal of 172084045 is 540480271.

It is not a de Polignac number, because 172084045 - 2¹ = 172084043 is a prime.

It is a super-2 number, since 2×172084045² = 59225837087124050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172083998 and 172084016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172084043) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9670 + ... + 20920.

It is an arithmetic number, because the mean of its divisors is an integer number (8101440).

Almost surely, 2^172084045 is an apocalyptic number.

It is an amenable number.

172084045 is a deficient number, since it is larger than the sum of its proper divisors (87162035).

172084045 is a wasteful number, since it uses less digits than its factorization.

172084045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11305.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 172084045 is about 13118.0808428672. The cubic root of 172084045 is about 556.2203431565.

The spelling of 172084045 in words is "one hundred seventy-two million, eighty-four thousand, forty-five".