75342529 has 2 divisors, whose sum is σ = 75342530. Its totient is φ = 75342528.

The previous prime is 75342523. The next prime is 75342539. The reversal of 75342529 is 92524357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60093504 + 15249025 = 7752^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 75342529 - 2⁷ = 75342401 is a prime.

It is a super-2 number, since 2×75342529² = 11352993352231682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75342523) 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, 37671264 + 37671265.

It is an arithmetic number, because the mean of its divisors is an integer number (37671265).

Almost surely, 2^75342529 is an apocalyptic number.

It is an amenable number.

75342529 is a deficient number, since it is larger than the sum of its proper divisors (1).

75342529 is an equidigital number, since it uses as much as digits as its factorization.

75342529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 75342529 is about 8680.0074308724. The cubic root of 75342529 is about 422.3573581008.

The spelling of 75342529 in words is "seventy-five million, three hundred forty-two thousand, five hundred twenty-nine".