525335561 has 2 divisors, whose sum is σ = 525335562. Its totient is φ = 525335560.

The previous prime is 525335557. The next prime is 525335593. The reversal of 525335561 is 165533525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348046336 + 177289225 = 18656^2 + 13315^2 .

It is a cyclic number.

It is not a de Polignac number, because 525335561 - 2² = 525335557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (525335861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262667780 + 262667781.

It is an arithmetic number, because the mean of its divisors is an integer number (262667781).

Almost surely, 2^525335561 is an apocalyptic number.

It is an amenable number.

525335561 is a deficient number, since it is larger than the sum of its proper divisors (1).

525335561 is an equidigital number, since it uses as much as digits as its factorization.

525335561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 35.

The square root of 525335561 is about 22920.1998464237. The cubic root of 525335561 is about 806.8861606066.

The spelling of 525335561 in words is "five hundred twenty-five million, three hundred thirty-five thousand, five hundred sixty-one".