75216317 has 4 divisors (see below), whose sum is σ = 82054176. Its totient is φ = 68378460.

The previous prime is 75216311. The next prime is 75216367. The reversal of 75216317 is 71361257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75216317 - 2¹⁶ = 75150781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75216311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3418913 + ... + 3418934.

It is an arithmetic number, because the mean of its divisors is an integer number (20513544).

Almost surely, 2^75216317 is an apocalyptic number.

It is an amenable number.

75216317 is a deficient number, since it is larger than the sum of its proper divisors (6837859).

75216317 is a wasteful number, since it uses less digits than its factorization.

75216317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837858.

The product of its digits is 8820, while the sum is 32.

The square root of 75216317 is about 8672.7341133001. The cubic root of 75216317 is about 422.1213853097.

The spelling of 75216317 in words is "seventy-five million, two hundred sixteen thousand, three hundred seventeen".