172097011 has 2 divisors, whose sum is σ = 172097012. Its totient is φ = 172097010.

The previous prime is 172096999. The next prime is 172097039. The reversal of 172097011 is 110790271.

It is an a-pointer prime, because the next prime (172097039) can be obtained adding 172097011 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172097011 - 2⁵ = 172096979 is a prime.

It is not a weakly prime, because it can be changed into another prime (172097311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86048505 + 86048506.

It is an arithmetic number, because the mean of its divisors is an integer number (86048506).

Almost surely, 2^172097011 is an apocalyptic number.

172097011 is a deficient number, since it is larger than the sum of its proper divisors (1).

172097011 is an equidigital number, since it uses as much as digits as its factorization.

172097011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 172097011 is about 13118.5750369467. The cubic root of 172097011 is about 556.2343126325.

The spelling of 172097011 in words is "one hundred seventy-two million, ninety-seven thousand, eleven".