72136271 has 2 divisors, whose sum is σ = 72136272. Its totient is φ = 72136270.

The previous prime is 72136249. The next prime is 72136279. The reversal of 72136271 is 17263127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72136271 - 2¹⁰ = 72135247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72136279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36068135 + 36068136.

It is an arithmetic number, because the mean of its divisors is an integer number (36068136).

Almost surely, 2^72136271 is an apocalyptic number.

72136271 is a deficient number, since it is larger than the sum of its proper divisors (1).

72136271 is an equidigital number, since it uses as much as digits as its factorization.

72136271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 29.

The square root of 72136271 is about 8493.3074240840. The cubic root of 72136271 is about 416.2790576318.

Adding to 72136271 its reverse (17263127), we get a palindrome (89399398).

The spelling of 72136271 in words is "seventy-two million, one hundred thirty-six thousand, two hundred seventy-one".