520278223 has 2 divisors, whose sum is σ = 520278224. Its totient is φ = 520278222.

The previous prime is 520278181. The next prime is 520278229. The reversal of 520278223 is 322872025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520278223 - 2¹³ = 520270031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520278229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260139111 + 260139112.

It is an arithmetic number, because the mean of its divisors is an integer number (260139112).

Almost surely, 2^520278223 is an apocalyptic number.

520278223 is a deficient number, since it is larger than the sum of its proper divisors (1).

520278223 is an equidigital number, since it uses as much as digits as its factorization.

520278223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 520278223 is about 22809.6081290319. The cubic root of 520278223 is about 804.2885438885.

The spelling of 520278223 in words is "five hundred twenty million, two hundred seventy-eight thousand, two hundred twenty-three".