520622131 has 2 divisors, whose sum is σ = 520622132. Its totient is φ = 520622130.

The previous prime is 520622101. The next prime is 520622191. The reversal of 520622131 is 131226025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520622131 is a prime.

It is a super-3 number, since 3×520622131³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520622101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260311065 + 260311066.

It is an arithmetic number, because the mean of its divisors is an integer number (260311066).

Almost surely, 2^520622131 is an apocalyptic number.

520622131 is a deficient number, since it is larger than the sum of its proper divisors (1).

520622131 is an equidigital number, since it uses as much as digits as its factorization.

520622131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 520622131 is about 22817.1455489069. The cubic root of 520622131 is about 804.4657185421.

Adding to 520622131 its reverse (131226025), we get a palindrome (651848156).

The spelling of 520622131 in words is "five hundred twenty million, six hundred twenty-two thousand, one hundred thirty-one".