11975081 has 2 divisors, whose sum is σ = 11975082. Its totient is φ = 11975080.

The previous prime is 11975077. The next prime is 11975101. The reversal of 11975081 is 18057911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 3481 = 3460^2 + 59^2 .

It is an emirp because it is prime and its reverse (18057911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11975081 - 2² = 11975077 is a prime.

It is a super-2 number, since 2×11975081² = 286805129913122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11975011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987540 + 5987541.

It is an arithmetic number, because the mean of its divisors is an integer number (5987541).

Almost surely, 2^11975081 is an apocalyptic number.

It is an amenable number.

11975081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975081 is an equidigital number, since it uses as much as digits as its factorization.

11975081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11975081 is about 3460.5029981204. The cubic root of 11975081 is about 228.7842657220.

The spelling of 11975081 in words is "eleven million, nine hundred seventy-five thousand, eighty-one".