72772243 has 2 divisors, whose sum is σ = 72772244. Its totient is φ = 72772242.

The previous prime is 72772177. The next prime is 72772247. The reversal of 72772243 is 34227727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72772243 - 2⁹ = 72771731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72772199 and 72772208.

It is not a weakly prime, because it can be changed into another prime (72772247) 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, 36386121 + 36386122.

It is an arithmetic number, because the mean of its divisors is an integer number (36386122).

Almost surely, 2^72772243 is an apocalyptic number.

72772243 is a deficient number, since it is larger than the sum of its proper divisors (1).

72772243 is an equidigital number, since it uses as much as digits as its factorization.

72772243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 34.

The square root of 72772243 is about 8530.6648627173. The cubic root of 72772243 is about 417.4988212763.

The spelling of 72772243 in words is "seventy-two million, seven hundred seventy-two thousand, two hundred forty-three".