72295129 has 2 divisors, whose sum is σ = 72295130. Its totient is φ = 72295128.

The previous prime is 72295121. The next prime is 72295159. The reversal of 72295129 is 92159227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71859529 + 435600 = 8477^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 72295129 - 2³ = 72295121 is a prime.

It is not a weakly prime, because it can be changed into another prime (72295121) 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, 36147564 + 36147565.

It is an arithmetic number, because the mean of its divisors is an integer number (36147565).

Almost surely, 2^72295129 is an apocalyptic number.

It is an amenable number.

72295129 is a deficient number, since it is larger than the sum of its proper divisors (1).

72295129 is an equidigital number, since it uses as much as digits as its factorization.

72295129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 72295129 is about 8502.6542326499. The cubic root of 72295129 is about 416.5844092198.

The spelling of 72295129 in words is "seventy-two million, two hundred ninety-five thousand, one hundred twenty-nine".