172004003 has 2 divisors, whose sum is σ = 172004004. Its totient is φ = 172004002.

The previous prime is 172003991. The next prime is 172004023. The reversal of 172004003 is 300400271.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (300400271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172004003 - 2¹⁸ = 171741859 is a prime.

It is not a weakly prime, because it can be changed into another prime (172004023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86002001 + 86002002.

It is an arithmetic number, because the mean of its divisors is an integer number (86002002).

Almost surely, 2^172004003 is an apocalyptic number.

172004003 is a deficient number, since it is larger than the sum of its proper divisors (1).

172004003 is an equidigital number, since it uses as much as digits as its factorization.

172004003 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 17.

The square root of 172004003 is about 13115.0296606603. The cubic root of 172004003 is about 556.1340909355.

Adding to 172004003 its reverse (300400271), we get a palindrome (472404274).

The spelling of 172004003 in words is "one hundred seventy-two million, four thousand, three".