526901561 has 2 divisors, whose sum is σ = 526901562. Its totient is φ = 526901560.

The previous prime is 526901509. The next prime is 526901563. The reversal of 526901561 is 165109625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478515625 + 48385936 = 21875^2 + 6956^2 .

It is a cyclic number.

It is not a de Polignac number, because 526901561 - 2¹⁸ = 526639417 is a prime.

Together with 526901563, 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 (526901563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263450780 + 263450781.

It is an arithmetic number, because the mean of its divisors is an integer number (263450781).

Almost surely, 2^526901561 is an apocalyptic number.

It is an amenable number.

526901561 is a deficient number, since it is larger than the sum of its proper divisors (1).

526901561 is an equidigital number, since it uses as much as digits as its factorization.

526901561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 526901561 is about 22954.3364312715. The cubic root of 526901561 is about 807.6871281759.

The spelling of 526901561 in words is "five hundred twenty-six million, nine hundred one thousand, five hundred sixty-one".