11975897 has 2 divisors, whose sum is σ = 11975898. Its totient is φ = 11975896.

The previous prime is 11975867. The next prime is 11975923. The reversal of 11975897 is 79857911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8667136 + 3308761 = 2944^2 + 1819^2 .

It is a cyclic number.

It is not a de Polignac number, because 11975897 - 2¹² = 11971801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11975867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987948 + 5987949.

It is an arithmetic number, because the mean of its divisors is an integer number (5987949).

Almost surely, 2^11975897 is an apocalyptic number.

It is an amenable number.

11975897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975897 is an equidigital number, since it uses as much as digits as its factorization.

11975897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 47.

The square root of 11975897 is about 3460.6208980471. The cubic root of 11975897 is about 228.7894621718.

The spelling of 11975897 in words is "eleven million, nine hundred seventy-five thousand, eight hundred ninety-seven".