521775041 has 2 divisors, whose sum is σ = 521775042. Its totient is φ = 521775040.

The previous prime is 521775011. The next prime is 521775053. The reversal of 521775041 is 140577125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314530225 + 207244816 = 17735^2 + 14396^2 .

It is a cyclic number.

It is not a de Polignac number, because 521775041 - 2⁶ = 521774977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521774989 and 521775007.

It is not a weakly prime, because it can be changed into another prime (521775011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260887520 + 260887521.

It is an arithmetic number, because the mean of its divisors is an integer number (260887521).

Almost surely, 2^521775041 is an apocalyptic number.

It is an amenable number.

521775041 is a deficient number, since it is larger than the sum of its proper divisors (1).

521775041 is an equidigital number, since it uses as much as digits as its factorization.

521775041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 521775041 is about 22842.3956930966. The cubic root of 521775041 is about 805.0591065482.

The spelling of 521775041 in words is "five hundred twenty-one million, seven hundred seventy-five thousand, forty-one".