72652171 has 2 divisors, whose sum is σ = 72652172. Its totient is φ = 72652170.

The previous prime is 72652157. The next prime is 72652199. The reversal of 72652171 is 17125627.

It is a weak prime.

It is an emirp because it is prime and its reverse (17125627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72652171 - 2¹⁵ = 72619403 is a prime.

It is not a weakly prime, because it can be changed into another prime (72653171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36326085 + 36326086.

It is an arithmetic number, because the mean of its divisors is an integer number (36326086).

Almost surely, 2^72652171 is an apocalyptic number.

72652171 is a deficient number, since it is larger than the sum of its proper divisors (1).

72652171 is an equidigital number, since it uses as much as digits as its factorization.

72652171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 72652171 is about 8523.6242878250. The cubic root of 72652171 is about 417.2690747289.

Adding to 72652171 its reverse (17125627), we get a palindrome (89777798).

The spelling of 72652171 in words is "seventy-two million, six hundred fifty-two thousand, one hundred seventy-one".