73072229 has 2 divisors, whose sum is σ = 73072230. Its totient is φ = 73072228.

The previous prime is 73072201. The next prime is 73072231. The reversal of 73072229 is 92227037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43890625 + 29181604 = 6625^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 73072229 - 2²⁴ = 56295013 is a prime.

Together with 73072231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73072195 and 73072204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73072289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36536114 + 36536115.

It is an arithmetic number, because the mean of its divisors is an integer number (36536115).

Almost surely, 2^73072229 is an apocalyptic number.

It is an amenable number.

73072229 is a deficient number, since it is larger than the sum of its proper divisors (1).

73072229 is an equidigital number, since it uses as much as digits as its factorization.

73072229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 73072229 is about 8548.2295827850. The cubic root of 73072229 is about 418.0717141519.

The spelling of 73072229 in words is "seventy-three million, seventy-two thousand, two hundred twenty-nine".