526890449 has 2 divisors, whose sum is σ = 526890450. Its totient is φ = 526890448.

The previous prime is 526890443. The next prime is 526890451. The reversal of 526890449 is 944098625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381928849 + 144961600 = 19543^2 + 12040^2 .

It is a cyclic number.

It is not a de Polignac number, because 526890449 - 2⁴ = 526890433 is a prime.

It is a super-2 number, since 2×526890449² = 555227090494843202, which contains 22 as substring.

Together with 526890451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (526890443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263445224 + 263445225.

It is an arithmetic number, because the mean of its divisors is an integer number (263445225).

Almost surely, 2^526890449 is an apocalyptic number.

It is an amenable number.

526890449 is a deficient number, since it is larger than the sum of its proper divisors (1).

526890449 is an equidigital number, since it uses as much as digits as its factorization.

526890449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 526890449 is about 22954.0943842270. The cubic root of 526890449 is about 807.6814502763.

The spelling of 526890449 in words is "five hundred twenty-six million, eight hundred ninety thousand, four hundred forty-nine".