72262271 has 4 divisors (see below), whose sum is σ = 74593344. Its totient is φ = 69931200.

The previous prime is 72262261. The next prime is 72262283. The reversal of 72262271 is 17226227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17226227 = 397 ⋅43391.

It is a cyclic number.

It is not a de Polignac number, because 72262271 - 2¹⁰ = 72261247 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 (72262261) 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, 1165490 + ... + 1165551.

It is an arithmetic number, because the mean of its divisors is an integer number (18648336).

Almost surely, 2^72262271 is an apocalyptic number.

72262271 is a deficient number, since it is larger than the sum of its proper divisors (2331073).

72262271 is a wasteful number, since it uses less digits than its factorization.

72262271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331072.

The product of its digits is 4704, while the sum is 29.

The square root of 72262271 is about 8500.7217928832. The cubic root of 72262271 is about 416.5212873793.

Adding to 72262271 its reverse (17226227), we get a palindrome (89488498).

The spelling of 72262271 in words is "seventy-two million, two hundred sixty-two thousand, two hundred seventy-one".