72445111 has 2 divisors, whose sum is σ = 72445112. Its totient is φ = 72445110.

The previous prime is 72445057. The next prime is 72445159. The reversal of 72445111 is 11154427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72445111 - 2¹³ = 72436919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72448111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36222555 + 36222556.

It is an arithmetic number, because the mean of its divisors is an integer number (36222556).

Almost surely, 2^72445111 is an apocalyptic number.

72445111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72445111 is an equidigital number, since it uses as much as digits as its factorization.

72445111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 25.

The square root of 72445111 is about 8511.4693796077. The cubic root of 72445111 is about 416.8722894074.

Adding to 72445111 its reverse (11154427), we get a palindrome (83599538).

The spelling of 72445111 in words is "seventy-two million, four hundred forty-five thousand, one hundred eleven".