72112541 has 4 divisors (see below), whose sum is σ = 74438784. Its totient is φ = 69786300.

The previous prime is 72112529. The next prime is 72112549. The reversal of 72112541 is 14521127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14521127 = 193 ⋅75239.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72112541 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 (72112549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163075 + ... + 1163136.

It is an arithmetic number, because the mean of its divisors is an integer number (18609696).

Almost surely, 2^72112541 is an apocalyptic number.

It is an amenable number.

72112541 is a deficient number, since it is larger than the sum of its proper divisors (2326243).

72112541 is a wasteful number, since it uses less digits than its factorization.

72112541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326242.

The product of its digits is 560, while the sum is 23.

The square root of 72112541 is about 8491.9103268935. The cubic root of 72112541 is about 416.2334061387.

Adding to 72112541 its reverse (14521127), we get a palindrome (86633668).

The spelling of 72112541 in words is "seventy-two million, one hundred twelve thousand, five hundred forty-one".