172279001 has 2 divisors, whose sum is σ = 172279002. Its totient is φ = 172279000.

The previous prime is 172278983. The next prime is 172279021. The reversal of 172279001 is 100972271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168480400 + 3798601 = 12980^2 + 1949^2 .

It is an emirp because it is prime and its reverse (100972271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172279001 - 2¹⁰ = 172277977 is a prime.

It is not a weakly prime, because it can be changed into another prime (172279021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86139500 + 86139501.

It is an arithmetic number, because the mean of its divisors is an integer number (86139501).

Almost surely, 2^172279001 is an apocalyptic number.

It is an amenable number.

172279001 is a deficient number, since it is larger than the sum of its proper divisors (1).

172279001 is an equidigital number, since it uses as much as digits as its factorization.

172279001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 172279001 is about 13125.5095520136. The cubic root of 172279001 is about 556.4303133652.

The spelling of 172279001 in words is "one hundred seventy-two million, two hundred seventy-nine thousand, one".