201290017 has 4 divisors (see below), whose sum is σ = 201443716. Its totient is φ = 201136320.

The previous prime is 201290003. The next prime is 201290029. The reversal of 201290017 is 710092102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710092102 = 2 ⋅355046051.

It can be written as a sum of positive squares in 2 ways, for example, as 153735201 + 47554816 = 12399^2 + 6896^2 .

It is a cyclic number.

It is not a de Polignac number, because 201290017 - 2²³ = 192901409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201290017.

It is not an unprimeable number, because it can be changed into a prime (201290077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74868 + ... + 77509.

It is an arithmetic number, because the mean of its divisors is an integer number (50360929).

Almost surely, 2^201290017 is an apocalyptic number.

It is an amenable number.

201290017 is a deficient number, since it is larger than the sum of its proper divisors (153699).

201290017 is a wasteful number, since it uses less digits than its factorization.

201290017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153698.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 201290017 is about 14187.6713029306. The cubic root of 201290017 is about 586.0581981594.

It can be divided in two parts, 2012 and 90017, that added together give a palindrome (92029).

The spelling of 201290017 in words is "two hundred one million, two hundred ninety thousand, seventeen".