520531001 has 2 divisors, whose sum is σ = 520531002. Its totient is φ = 520531000.

The previous prime is 520530979. The next prime is 520531019. The reversal of 520531001 is 100135025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504047401 + 16483600 = 22451^2 + 4060^2 .

It is a cyclic number.

It is not a de Polignac number, because 520531001 - 2¹⁸ = 520268857 is a prime.

It is a super-3 number, since 3×520531001³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520531021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260265500 + 260265501.

It is an arithmetic number, because the mean of its divisors is an integer number (260265501).

Almost surely, 2^520531001 is an apocalyptic number.

It is an amenable number.

520531001 is a deficient number, since it is larger than the sum of its proper divisors (1).

520531001 is an equidigital number, since it uses as much as digits as its factorization.

520531001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 520531001 is about 22815.1484983114. The cubic root of 520531001 is about 804.4187777543.

Adding to 520531001 its reverse (100135025), we get a palindrome (620666026).

The spelling of 520531001 in words is "five hundred twenty million, five hundred thirty-one thousand, one".