75243717 has 12 divisors (see below), whose sum is σ = 115078860. Its totient is φ = 47211648.

The previous prime is 75243713. The next prime is 75243731. The reversal of 75243717 is 71734257.

It can be written as a sum of positive squares in 2 ways, for example, as 26718561 + 48525156 = 5169^2 + 6966^2 .

It is not a de Polignac number, because 75243717 - 2² = 75243713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75243713) 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 in 11 ways as a sum of consecutive naturals, for example, 245742 + ... + 246047.

It is an arithmetic number, because the mean of its divisors is an integer number (9589905).

Almost surely, 2^75243717 is an apocalyptic number.

It is an amenable number.

75243717 is a deficient number, since it is larger than the sum of its proper divisors (39835143).

75243717 is a wasteful number, since it uses less digits than its factorization.

75243717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491812 (or 491809 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 75243717 is about 8674.3136327896. The cubic root of 75243717 is about 422.1726362539.

The spelling of 75243717 in words is "seventy-five million, two hundred forty-three thousand, seven hundred seventeen".