72163201 has 8 divisors (see below), whose sum is σ = 79802784. Its totient is φ = 64703520.

The previous prime is 72163199. The next prime is 72163207. The reversal of 72163201 is 10236127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72163201 - 2¹ = 72163199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72163207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44131 + ... + 45736.

It is an arithmetic number, because the mean of its divisors is an integer number (9975348).

Almost surely, 2^72163201 is an apocalyptic number.

It is an amenable number.

72163201 is a deficient number, since it is larger than the sum of its proper divisors (7639583).

72163201 is a wasteful number, since it uses less digits than its factorization.

72163201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89951.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72163201 is about 8494.8926420526. The cubic root of 72163201 is about 416.3308531207.

Adding to 72163201 its reverse (10236127), we get a palindrome (82399328).

The spelling of 72163201 in words is "seventy-two million, one hundred sixty-three thousand, two hundred one".