72226547 has 2 divisors, whose sum is σ = 72226548. Its totient is φ = 72226546.

The previous prime is 72226529. The next prime is 72226571. The reversal of 72226547 is 74562227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72226547 - 2⁸ = 72226291 is a prime.

It is not a weakly prime, because it can be changed into another prime (72226507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36113273 + 36113274.

It is an arithmetic number, because the mean of its divisors is an integer number (36113274).

Almost surely, 2^72226547 is an apocalyptic number.

72226547 is a deficient number, since it is larger than the sum of its proper divisors (1).

72226547 is an equidigital number, since it uses as much as digits as its factorization.

72226547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 72226547 is about 8498.6202997898. The cubic root of 72226547 is about 416.4526380969.

The spelling of 72226547 in words is "seventy-two million, two hundred twenty-six thousand, five hundred forty-seven".