72255611 has 2 divisors, whose sum is σ = 72255612. Its totient is φ = 72255610.

The previous prime is 72255607. The next prime is 72255647. The reversal of 72255611 is 11655227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72255611 - 2² = 72255607 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72255311) 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, 36127805 + 36127806.

It is an arithmetic number, because the mean of its divisors is an integer number (36127806).

Almost surely, 2^72255611 is an apocalyptic number.

72255611 is a deficient number, since it is larger than the sum of its proper divisors (1).

72255611 is an equidigital number, since it uses as much as digits as its factorization.

72255611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 72255611 is about 8500.3300524156. The cubic root of 72255611 is about 416.5084908584.

The spelling of 72255611 in words is "seventy-two million, two hundred fifty-five thousand, six hundred eleven".