526906489 has 2 divisors, whose sum is σ = 526906490. Its totient is φ = 526906488.

The previous prime is 526906469. The next prime is 526906511. The reversal of 526906489 is 984609625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373146489 + 153760000 = 19317^2 + 12400^2 .

It is a cyclic number.

It is not a de Polignac number, because 526906489 - 2⁷ = 526906361 is a prime.

It is not a weakly prime, because it can be changed into another prime (526906459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263453244 + 263453245.

It is an arithmetic number, because the mean of its divisors is an integer number (263453245).

Almost surely, 2^526906489 is an apocalyptic number.

It is an amenable number.

526906489 is a deficient number, since it is larger than the sum of its proper divisors (1).

526906489 is an equidigital number, since it uses as much as digits as its factorization.

526906489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 526906489 is about 22954.4437745723. The cubic root of 526906489 is about 807.6896462109.

The spelling of 526906489 in words is "five hundred twenty-six million, nine hundred six thousand, four hundred eighty-nine".