526560521 has 2 divisors, whose sum is σ = 526560522. Its totient is φ = 526560520.

The previous prime is 526560493. The next prime is 526560527. The reversal of 526560521 is 125065625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519612025 + 6948496 = 22795^2 + 2636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526560521 is a prime.

It is not a weakly prime, because it can be changed into another prime (526560527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263280260 + 263280261.

It is an arithmetic number, because the mean of its divisors is an integer number (263280261).

Almost surely, 2^526560521 is an apocalyptic number.

It is an amenable number.

526560521 is a deficient number, since it is larger than the sum of its proper divisors (1).

526560521 is an equidigital number, since it uses as much as digits as its factorization.

526560521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 526560521 is about 22946.9065671171. The cubic root of 526560521 is about 807.5128305527.

The spelling of 526560521 in words is "five hundred twenty-six million, five hundred sixty thousand, five hundred twenty-one".