73133729 has 2 divisors, whose sum is σ = 73133730. Its totient is φ = 73133728.

The previous prime is 73133653. The next prime is 73133741. The reversal of 73133729 is 92733137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53993104 + 19140625 = 7348^2 + 4375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73133729 is a prime.

It is not a weakly prime, because it can be changed into another prime (73133759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36566864 + 36566865.

It is an arithmetic number, because the mean of its divisors is an integer number (36566865).

Almost surely, 2^73133729 is an apocalyptic number.

It is an amenable number.

73133729 is a deficient number, since it is larger than the sum of its proper divisors (1).

73133729 is an equidigital number, since it uses as much as digits as its factorization.

73133729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 35.

The square root of 73133729 is about 8551.8260623097. The cubic root of 73133729 is about 418.1889689145.

The spelling of 73133729 in words is "seventy-three million, one hundred thirty-three thousand, seven hundred twenty-nine".