75117911 has 8 divisors (see below), whose sum is σ = 82041984. Its totient is φ = 68209720.

The previous prime is 75117877. The next prime is 75117937. The reversal of 75117911 is 11971157.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75117911 - 2¹⁰ = 75116887 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 (75117941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7340 + ... + 14286.

It is an arithmetic number, because the mean of its divisors is an integer number (10255248).

Almost surely, 2^75117911 is an apocalyptic number.

75117911 is a deficient number, since it is larger than the sum of its proper divisors (6924073).

75117911 is a wasteful number, since it uses less digits than its factorization.

75117911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941.

The product of its digits is 2205, while the sum is 32.

The square root of 75117911 is about 8667.0589590703. The cubic root of 75117911 is about 421.9372169127.

The spelling of 75117911 in words is "seventy-five million, one hundred seventeen thousand, nine hundred eleven".