72032201 has 4 divisors (see below), whose sum is σ = 74516100. Its totient is φ = 69548304.

The previous prime is 72032197. The next prime is 72032237. The reversal of 72032201 is 10223027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10223027 = 83 ⋅123169.

It can be written as a sum of positive squares in 2 ways, for example, as 34810000 + 37222201 = 5900^2 + 6101^2 .

It is a cyclic number.

It is not a de Polignac number, because 72032201 - 2² = 72032197 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 72032201.

It is not an unprimeable number, because it can be changed into a prime (72032101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241906 + ... + 1241963.

It is an arithmetic number, because the mean of its divisors is an integer number (18629025).

Almost surely, 2^72032201 is an apocalyptic number.

It is an amenable number.

72032201 is a deficient number, since it is larger than the sum of its proper divisors (2483899).

72032201 is a wasteful number, since it uses less digits than its factorization.

72032201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483898.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 72032201 is about 8487.1786242544. The cubic root of 72032201 is about 416.0787746069.

Adding to 72032201 its reverse (10223027), we get a palindrome (82255228).

The spelling of 72032201 in words is "seventy-two million, thirty-two thousand, two hundred one".