520631941 has 2 divisors, whose sum is σ = 520631942. Its totient is φ = 520631940.

The previous prime is 520631873. The next prime is 520631957. The reversal of 520631941 is 149136025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499701316 + 20930625 = 22354^2 + 4575^2 .

It is a cyclic number.

It is not a de Polignac number, because 520631941 - 2¹³ = 520623749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520631971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260315970 + 260315971.

It is an arithmetic number, because the mean of its divisors is an integer number (260315971).

Almost surely, 2^520631941 is an apocalyptic number.

It is an amenable number.

520631941 is a deficient number, since it is larger than the sum of its proper divisors (1).

520631941 is an equidigital number, since it uses as much as digits as its factorization.

520631941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 520631941 is about 22817.3605178163. The cubic root of 520631941 is about 804.4707713168.

Adding to 520631941 its reverse (149136025), we get a palindrome (669767966).

The spelling of 520631941 in words is "five hundred twenty million, six hundred thirty-one thousand, nine hundred forty-one".