75121171 has 2 divisors, whose sum is σ = 75121172. Its totient is φ = 75121170.

The previous prime is 75121159. The next prime is 75121187. The reversal of 75121171 is 17112157.

It is a weak prime.

It is an emirp because it is prime and its reverse (17112157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75121171 - 2⁵ = 75121139 is a prime.

It is a super-2 number, since 2×75121171² = 11286380664822482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75121771) 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 as a sum of consecutive naturals, namely, 37560585 + 37560586.

It is an arithmetic number, because the mean of its divisors is an integer number (37560586).

Almost surely, 2^75121171 is an apocalyptic number.

75121171 is a deficient number, since it is larger than the sum of its proper divisors (1).

75121171 is an equidigital number, since it uses as much as digits as its factorization.

75121171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 490, while the sum is 25.

The square root of 75121171 is about 8667.2470254401. The cubic root of 75121171 is about 421.9433206298.

The spelling of 75121171 in words is "seventy-five million, one hundred twenty-one thousand, one hundred seventy-one".