520402273 has 2 divisors, whose sum is σ = 520402274. Its totient is φ = 520402272.

The previous prime is 520402261. The next prime is 520402321. The reversal of 520402273 is 372204025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491597584 + 28804689 = 22172^2 + 5367^2 .

It is a cyclic number.

It is not a de Polignac number, because 520402273 - 2⁵ = 520402241 is a prime.

It is not a weakly prime, because it can be changed into another prime (520402573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260201136 + 260201137.

It is an arithmetic number, because the mean of its divisors is an integer number (260201137).

Almost surely, 2^520402273 is an apocalyptic number.

It is an amenable number.

520402273 is a deficient number, since it is larger than the sum of its proper divisors (1).

520402273 is an equidigital number, since it uses as much as digits as its factorization.

520402273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 520402273 is about 22812.3272157840. The cubic root of 520402273 is about 804.3524610140.

Adding to 520402273 its reverse (372204025), we get a palindrome (892606298).

The spelling of 520402273 in words is "five hundred twenty million, four hundred two thousand, two hundred seventy-three".