75117311 has 2 divisors, whose sum is σ = 75117312. Its totient is φ = 75117310.

The previous prime is 75117299. The next prime is 75117313. The reversal of 75117311 is 11371157.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75117311 is a prime.

It is a super-2 number, since 2×75117311² = 11285220823741442, which contains 22 as substring.

Together with 75117313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75117313) by changing a digit.

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 as a sum of consecutive naturals, namely, 37558655 + 37558656.

It is an arithmetic number, because the mean of its divisors is an integer number (37558656).

Almost surely, 2^75117311 is an apocalyptic number.

75117311 is a deficient number, since it is larger than the sum of its proper divisors (1).

75117311 is an equidigital number, since it uses as much as digits as its factorization.

75117311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 735, while the sum is 26.

The square root of 75117311 is about 8667.0243451833. The cubic root of 75117311 is about 421.9360935099.

Adding to 75117311 its reverse (11371157), we get a palindrome (86488468).

The spelling of 75117311 in words is "seventy-five million, one hundred seventeen thousand, three hundred eleven".