172295009 has 2 divisors, whose sum is σ = 172295010. Its totient is φ = 172295008.

The previous prime is 172294987. The next prime is 172295027. The reversal of 172295009 is 900592271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102070609 + 70224400 = 10103^2 + 8380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172295009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172295009.

It is not a weakly prime, because it can be changed into another prime (172295089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86147504 + 86147505.

It is an arithmetic number, because the mean of its divisors is an integer number (86147505).

Almost surely, 2^172295009 is an apocalyptic number.

It is an amenable number.

172295009 is a deficient number, since it is larger than the sum of its proper divisors (1).

172295009 is an equidigital number, since it uses as much as digits as its factorization.

172295009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 172295009 is about 13126.1193427456. The cubic root of 172295009 is about 556.4475471557.

The spelling of 172295009 in words is "one hundred seventy-two million, two hundred ninety-five thousand, nine".