75163729 has 2 divisors, whose sum is σ = 75163730. Its totient is φ = 75163728.

The previous prime is 75163727. The next prime is 75163769. The reversal of 75163729 is 92736157.

It is an a-pointer prime, because the next prime (75163769) can be obtained adding 75163729 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 859329 = 8620^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 75163729 - 2¹ = 75163727 is a prime.

Together with 75163727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 75163691 and 75163700.

It is not a weakly prime, because it can be changed into another prime (75163727) 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, 37581864 + 37581865.

It is an arithmetic number, because the mean of its divisors is an integer number (37581865).

Almost surely, 2^75163729 is an apocalyptic number.

It is an amenable number.

75163729 is a deficient number, since it is larger than the sum of its proper divisors (1).

75163729 is an equidigital number, since it uses as much as digits as its factorization.

75163729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 75163729 is about 8669.7017826451. The cubic root of 75163729 is about 422.0229860274.

The spelling of 75163729 in words is "seventy-five million, one hundred sixty-three thousand, seven hundred twenty-nine".