172484009 has 2 divisors, whose sum is σ = 172484010. Its totient is φ = 172484008.

The previous prime is 172484003. The next prime is 172484069. The reversal of 172484009 is 900484271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155550784 + 16933225 = 12472^2 + 4115^2 .

It is a cyclic number.

It is not a de Polignac number, because 172484009 - 2¹² = 172479913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172484009.

It is not a weakly prime, because it can be changed into another prime (172484003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86242004 + 86242005.

It is an arithmetic number, because the mean of its divisors is an integer number (86242005).

Almost surely, 2^172484009 is an apocalyptic number.

It is an amenable number.

172484009 is a deficient number, since it is larger than the sum of its proper divisors (1).

172484009 is an equidigital number, since it uses as much as digits as its factorization.

172484009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 172484009 is about 13133.3167554887. The cubic root of 172484009 is about 556.6509389144.

The spelling of 172484009 in words is "one hundred seventy-two million, four hundred eighty-four thousand, nine".