12151973 has 2 divisors, whose sum is σ = 12151974. Its totient is φ = 12151972.

The previous prime is 12151961. The next prime is 12151987. The reversal of 12151973 is 37915121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 3869089 = 2878^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 12151973 - 2⁸ = 12151717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12151273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6075986 + 6075987.

It is an arithmetic number, because the mean of its divisors is an integer number (6075987).

Almost surely, 2^12151973 is an apocalyptic number.

It is an amenable number.

12151973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12151973 is an equidigital number, since it uses as much as digits as its factorization.

12151973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 29.

The square root of 12151973 is about 3485.9680147701. The cubic root of 12151973 is about 229.9052729006.

The spelling of 12151973 in words is "twelve million, one hundred fifty-one thousand, nine hundred seventy-three".