75081329 has 2 divisors, whose sum is σ = 75081330. Its totient is φ = 75081328.

The previous prime is 75081323. The next prime is 75081341. The reversal of 75081329 is 92318057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72709729 + 2371600 = 8527^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 75081329 - 2⁴ = 75081313 is a prime.

It is not a weakly prime, because it can be changed into another prime (75081323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37540664 + 37540665.

It is an arithmetic number, because the mean of its divisors is an integer number (37540665).

Almost surely, 2^75081329 is an apocalyptic number.

It is an amenable number.

75081329 is a deficient number, since it is larger than the sum of its proper divisors (1).

75081329 is an equidigital number, since it uses as much as digits as its factorization.

75081329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 75081329 is about 8664.9482975953. The cubic root of 75081329 is about 421.8687121075.

The spelling of 75081329 in words is "seventy-five million, eighty-one thousand, three hundred twenty-nine".