521231041 has 2 divisors, whose sum is σ = 521231042. Its totient is φ = 521231040.

The previous prime is 521231027. The next prime is 521231059. The reversal of 521231041 is 140132125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479434816 + 41796225 = 21896^2 + 6465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521231041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (521231341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260615520 + 260615521.

It is an arithmetic number, because the mean of its divisors is an integer number (260615521).

Almost surely, 2^521231041 is an apocalyptic number.

It is an amenable number.

521231041 is a deficient number, since it is larger than the sum of its proper divisors (1).

521231041 is an equidigital number, since it uses as much as digits as its factorization.

521231041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 521231041 is about 22830.4849050562. The cubic root of 521231041 is about 804.7792257503.

Adding to 521231041 its reverse (140132125), we get a palindrome (661363166).

The spelling of 521231041 in words is "five hundred twenty-one million, two hundred thirty-one thousand, forty-one".