75524989 has 2 divisors, whose sum is σ = 75524990. Its totient is φ = 75524988.

The previous prime is 75524929. The next prime is 75525041. The reversal of 75524989 is 98942557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68608089 + 6916900 = 8283^2 + 2630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75524989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75524929) 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, 37762494 + 37762495.

It is an arithmetic number, because the mean of its divisors is an integer number (37762495).

Almost surely, 2^75524989 is an apocalyptic number.

It is an amenable number.

75524989 is a deficient number, since it is larger than the sum of its proper divisors (1).

75524989 is an equidigital number, since it uses as much as digits as its factorization.

75524989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 49.

The square root of 75524989 is about 8690.5114348927. The cubic root of 75524989 is about 422.6980297818.

The spelling of 75524989 in words is "seventy-five million, five hundred twenty-four thousand, nine hundred eighty-nine".