72741271 has 4 divisors (see below), whose sum is σ = 73043344. Its totient is φ = 72439200.

The previous prime is 72741247. The next prime is 72741293. The reversal of 72741271 is 17214727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17214727 = 17 ⋅1012631.

It is a cyclic number.

It is not a de Polignac number, because 72741271 - 2¹¹ = 72739223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72741211) 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, 150675 + ... + 151156.

It is an arithmetic number, because the mean of its divisors is an integer number (18260836).

Almost surely, 2^72741271 is an apocalyptic number.

72741271 is a deficient number, since it is larger than the sum of its proper divisors (302073).

72741271 is a wasteful number, since it uses less digits than its factorization.

72741271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302072.

The product of its digits is 5488, while the sum is 31.

The square root of 72741271 is about 8528.8493362235. The cubic root of 72741271 is about 417.4395834504.

Adding to 72741271 its reverse (17214727), we get a palindrome (89955998).

The spelling of 72741271 in words is "seventy-two million, seven hundred forty-one thousand, two hundred seventy-one".