75115871 has 2 divisors, whose sum is σ = 75115872. Its totient is φ = 75115870.

The previous prime is 75115811. The next prime is 75115879. The reversal of 75115871 is 17851157.

It is a strong prime.

It is an emirp because it is prime and its reverse (17851157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75115871 - 2²² = 70921567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75115879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37557935 + 37557936.

It is an arithmetic number, because the mean of its divisors is an integer number (37557936).

Almost surely, 2^75115871 is an apocalyptic number.

75115871 is a deficient number, since it is larger than the sum of its proper divisors (1).

75115871 is an equidigital number, since it uses as much as digits as its factorization.

75115871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 35.

The square root of 75115871 is about 8666.9412712906. The cubic root of 75115871 is about 421.9333973189.

The spelling of 75115871 in words is "seventy-five million, one hundred fifteen thousand, eight hundred seventy-one".