525541 has 2 divisors, whose sum is σ = 525542. Its totient is φ = 525540.
The previous prime is 525533. The next prime is 525571. The reversal of 525541 is 145525.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 422500 + 103041 = 650^2 + 321^2 .
It is a cyclic number.
It is not a de Polignac number, because 525541 - 23 = 525533 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (525571) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262770 + 262771.
It is an arithmetic number, because the mean of its divisors is an integer number (262771).
2525541 is an apocalyptic number.
It is an amenable number.
525541 is a deficient number, since it is larger than the sum of its proper divisors (1).
525541 is an equidigital number, since it uses as much as digits as its factorization.
525541 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1000, while the sum is 22.
The square root of 525541 is about 724.9420666508. The cubic root of 525541 is about 80.6991327853.
The spelling of 525541 in words is "five hundred twenty-five thousand, five hundred forty-one".
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