73522129 has 2 divisors, whose sum is σ = 73522130. Its totient is φ = 73522128.

The previous prime is 73522117. The next prime is 73522157. The reversal of 73522129 is 92122537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52591504 + 20930625 = 7252^2 + 4575^2 .

It is a cyclic number.

It is not a de Polignac number, because 73522129 - 2¹¹ = 73520081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73522129.

It is not a weakly prime, because it can be changed into another prime (73522829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36761064 + 36761065.

It is an arithmetic number, because the mean of its divisors is an integer number (36761065).

Almost surely, 2^73522129 is an apocalyptic number.

It is an amenable number.

73522129 is a deficient number, since it is larger than the sum of its proper divisors (1).

73522129 is an equidigital number, since it uses as much as digits as its factorization.

73522129 is an evil number, because the sum of its binary digits is even.

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

The square root of 73522129 is about 8574.5045921033. The cubic root of 73522129 is about 418.9279708645.

The spelling of 73522129 in words is "seventy-three million, five hundred twenty-two thousand, one hundred twenty-nine".