8523149 has 2 divisors, whose sum is σ = 8523150. Its totient is φ = 8523148.

The previous prime is 8523143. The next prime is 8523173. The reversal of 8523149 is 9413258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 1737124 = 2605^2 + 1318^2 .

It is a cyclic number.

It is not a de Polignac number, because 8523149 - 2¹² = 8519053 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 (8523143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261574 + 4261575.

It is an arithmetic number, because the mean of its divisors is an integer number (4261575).

Almost surely, 2^8523149 is an apocalyptic number.

It is an amenable number.

8523149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8523149 is an equidigital number, since it uses as much as digits as its factorization.

8523149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 8523149 is about 2919.4432688443. The cubic root of 8523149 is about 204.2678542891.

The spelling of 8523149 in words is "eight million, five hundred twenty-three thousand, one hundred forty-nine".