72529889 has 2 divisors, whose sum is σ = 72529890. Its totient is φ = 72529888.

The previous prime is 72529867. The next prime is 72529901. The reversal of 72529889 is 98892527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 11424400 = 7817^2 + 3380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72529889 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72529489) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36264944 + 36264945.

It is an arithmetic number, because the mean of its divisors is an integer number (36264945).

Almost surely, 2^72529889 is an apocalyptic number.

It is an amenable number.

72529889 is a deficient number, since it is larger than the sum of its proper divisors (1).

72529889 is an equidigital number, since it uses as much as digits as its factorization.

72529889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The square root of 72529889 is about 8516.4481446199. The cubic root of 72529889 is about 417.0348392395.

The spelling of 72529889 in words is "seventy-two million, five hundred twenty-nine thousand, eight hundred eighty-nine".