72235061 has 2 divisors, whose sum is σ = 72235062. Its totient is φ = 72235060.

The previous prime is 72235049. The next prime is 72235069. The reversal of 72235061 is 16053227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 87025 = 8494^2 + 295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72235061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72235061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72235069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36117530 + 36117531.

It is an arithmetic number, because the mean of its divisors is an integer number (36117531).

Almost surely, 2^72235061 is an apocalyptic number.

It is an amenable number.

72235061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72235061 is an equidigital number, since it uses as much as digits as its factorization.

72235061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 72235061 is about 8499.1211898643. The cubic root of 72235061 is about 416.4690011406.

Adding to 72235061 its reverse (16053227), we get a palindrome (88288288).

The spelling of 72235061 in words is "seventy-two million, two hundred thirty-five thousand, sixty-one".