72441161 has 8 divisors (see below), whose sum is σ = 78087744. Its totient is φ = 66805200.

The previous prime is 72441151. The next prime is 72441179. The reversal of 72441161 is 16114427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72441161 - 2¹⁸ = 72179017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72441161.

It is not an unprimeable number, because it can be changed into a prime (72441151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16886 + ... + 20736.

It is an arithmetic number, because the mean of its divisors is an integer number (9760968).

Almost surely, 2^72441161 is an apocalyptic number.

It is an amenable number.

72441161 is a deficient number, since it is larger than the sum of its proper divisors (5646583).

72441161 is a wasteful number, since it uses less digits than its factorization.

72441161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311.

The product of its digits is 1344, while the sum is 26.

The square root of 72441161 is about 8511.2373366039. The cubic root of 72441161 is about 416.8647127495.

Adding to 72441161 its reverse (16114427), we get a palindrome (88555588).

The spelling of 72441161 in words is "seventy-two million, four hundred forty-one thousand, one hundred sixty-one".