172505027 has 2 divisors, whose sum is σ = 172505028. Its totient is φ = 172505026.

The previous prime is 172505017. The next prime is 172505041. The reversal of 172505027 is 720505271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172505027 - 2¹⁴ = 172488643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172505017) 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 as a sum of consecutive naturals, namely, 86252513 + 86252514.

It is an arithmetic number, because the mean of its divisors is an integer number (86252514).

Almost surely, 2^172505027 is an apocalyptic number.

172505027 is a deficient number, since it is larger than the sum of its proper divisors (1).

172505027 is an equidigital number, since it uses as much as digits as its factorization.

172505027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 172505027 is about 13134.1169097888. The cubic root of 172505027 is about 556.6735481876.

The spelling of 172505027 in words is "one hundred seventy-two million, five hundred five thousand, twenty-seven".