172260001 has 2 divisors, whose sum is σ = 172260002. Its totient is φ = 172260000.

The previous prime is 172259993. The next prime is 172260037. The reversal of 172260001 is 100062271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 83448225 = 9424^2 + 9135^2 .

It is an emirp because it is prime and its reverse (100062271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172260001 - 2³ = 172259993 is a prime.

It is not a weakly prime, because it can be changed into another prime (172260091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86130000 + 86130001.

It is an arithmetic number, because the mean of its divisors is an integer number (86130001).

Almost surely, 2^172260001 is an apocalyptic number.

It is an amenable number.

172260001 is a deficient number, since it is larger than the sum of its proper divisors (1).

172260001 is an equidigital number, since it uses as much as digits as its factorization.

172260001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 172260001 is about 13124.7857506323. The cubic root of 172260001 is about 556.4098570810.

The spelling of 172260001 in words is "one hundred seventy-two million, two hundred sixty thousand, one".