72017201 has 16 divisors (see below), whose sum is σ = 77611200. Its totient is φ = 66624768.

The previous prime is 72017189. The next prime is 72017203. The reversal of 72017201 is 10271027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72017201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72017203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189830 + ... + 190208.

It is an arithmetic number, because the mean of its divisors is an integer number (4850700).

Almost surely, 2^72017201 is an apocalyptic number.

It is an amenable number.

72017201 is a deficient number, since it is larger than the sum of its proper divisors (5593999).

72017201 is a wasteful number, since it uses less digits than its factorization.

72017201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 72017201 is about 8486.2948923544. The cubic root of 72017201 is about 416.0498911594.

Adding to 72017201 its reverse (10271027), we get a palindrome (82288228).

The spelling of 72017201 in words is "seventy-two million, seventeen thousand, two hundred one".