75217245 has 16 divisors (see below), whose sum is σ = 125580672. Its totient is φ = 38371520.

The previous prime is 75217223. The next prime is 75217273. The reversal of 75217245 is 54271257.

It is not a de Polignac number, because 75217245 - 2⁷ = 75217117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108666 + ... + 109355.

It is an arithmetic number, because the mean of its divisors is an integer number (7848792).

Almost surely, 2^75217245 is an apocalyptic number.

It is an amenable number.

75217245 is a deficient number, since it is larger than the sum of its proper divisors (50363427).

75217245 is a wasteful number, since it uses less digits than its factorization.

75217245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218052.

The product of its digits is 19600, while the sum is 33.

The square root of 75217245 is about 8672.7876141411. The cubic root of 75217245 is about 422.1231213117.

The spelling of 75217245 in words is "seventy-five million, two hundred seventeen thousand, two hundred forty-five".