521732041 has 2 divisors, whose sum is σ = 521732042. Its totient is φ = 521732040.

The previous prime is 521731967. The next prime is 521732047. The reversal of 521732041 is 140237125.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510940816 + 10791225 = 22604^2 + 3285^2 .

It is a cyclic number.

It is not a de Polignac number, because 521732041 - 2¹¹ = 521729993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521731997 and 521732015.

It is not a weakly prime, because it can be changed into another prime (521732047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260866020 + 260866021.

It is an arithmetic number, because the mean of its divisors is an integer number (260866021).

Almost surely, 2^521732041 is an apocalyptic number.

It is an amenable number.

521732041 is a deficient number, since it is larger than the sum of its proper divisors (1).

521732041 is an equidigital number, since it uses as much as digits as its factorization.

521732041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 521732041 is about 22841.4544414317. The cubic root of 521732041 is about 805.0369907002.

Adding to 521732041 its reverse (140237125), we get a palindrome (661969166).

The spelling of 521732041 in words is "five hundred twenty-one million, seven hundred thirty-two thousand, forty-one".