75243697 has 2 divisors, whose sum is σ = 75243698. Its totient is φ = 75243696.

The previous prime is 75243677. The next prime is 75243713. The reversal of 75243697 is 79634257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 22695696 = 7249^2 + 4764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75243697 is a prime.

It is a super-2 number, since 2×75243697² = 11323227876455618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75243617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37621848 + 37621849.

It is an arithmetic number, because the mean of its divisors is an integer number (37621849).

Almost surely, 2^75243697 is an apocalyptic number.

It is an amenable number.

75243697 is a deficient number, since it is larger than the sum of its proper divisors (1).

75243697 is an equidigital number, since it uses as much as digits as its factorization.

75243697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 75243697 is about 8674.3124799606. The cubic root of 75243697 is about 422.1725988490.

The spelling of 75243697 in words is "seventy-five million, two hundred forty-three thousand, six hundred ninety-seven".