11975147 has 2 divisors, whose sum is σ = 11975148. Its totient is φ = 11975146.

The previous prime is 11975143. The next prime is 11975153. The reversal of 11975147 is 74157911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11975147 - 2² = 11975143 is a prime.

It is not a weakly prime, because it can be changed into another prime (11975143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987573 + 5987574.

It is an arithmetic number, because the mean of its divisors is an integer number (5987574).

Almost surely, 2^11975147 is an apocalyptic number.

11975147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975147 is an equidigital number, since it uses as much as digits as its factorization.

11975147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 35.

The square root of 11975147 is about 3460.5125342932. The cubic root of 11975147 is about 228.7846860319.

The spelling of 11975147 in words is "eleven million, nine hundred seventy-five thousand, one hundred forty-seven".