72235291 has 2 divisors, whose sum is σ = 72235292. Its totient is φ = 72235290.

The previous prime is 72235213. The next prime is 72235333. The reversal of 72235291 is 19253227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72235291 - 2²³ = 63846683 is a prime.

It is not a weakly prime, because it can be changed into another prime (72235391) 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 as a sum of consecutive naturals, namely, 36117645 + 36117646.

It is an arithmetic number, because the mean of its divisors is an integer number (36117646).

Almost surely, 2^72235291 is an apocalyptic number.

72235291 is a deficient number, since it is larger than the sum of its proper divisors (1).

72235291 is an equidigital number, since it uses as much as digits as its factorization.

72235291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 72235291 is about 8499.1347206642. The cubic root of 72235291 is about 416.4694431594.

The spelling of 72235291 in words is "seventy-two million, two hundred thirty-five thousand, two hundred ninety-one".