201572017 has 2 divisors, whose sum is σ = 201572018. Its totient is φ = 201572016.

The previous prime is 201571991. The next prime is 201572071. The reversal of 201572017 is 710275102.

It is a happy number.

201572017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (201572071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138274081 + 63297936 = 11759^2 + 7956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201572017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201571982 and 201572000.

It is not a weakly prime, because it can be changed into another prime (201572087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100786008 + 100786009.

It is an arithmetic number, because the mean of its divisors is an integer number (100786009).

Almost surely, 2^201572017 is an apocalyptic number.

It is an amenable number.

201572017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201572017 is an equidigital number, since it uses as much as digits as its factorization.

201572017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 201572017 is about 14197.6060305954. The cubic root of 201572017 is about 586.3317525330.

The spelling of 201572017 in words is "two hundred one million, five hundred seventy-two thousand, seventeen".