520001087 has 2 divisors, whose sum is σ = 520001088. Its totient is φ = 520001086.

The previous prime is 520001081. The next prime is 520001159. The reversal of 520001087 is 780100025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520001087 - 2¹² = 519996991 is a prime.

It is a super-2 number, since 2×520001087² = 540802260962363138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260000543 + 260000544.

It is an arithmetic number, because the mean of its divisors is an integer number (260000544).

Almost surely, 2^520001087 is an apocalyptic number.

520001087 is a deficient number, since it is larger than the sum of its proper divisors (1).

520001087 is an equidigital number, since it uses as much as digits as its factorization.

520001087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 520001087 is about 22803.5323360220. The cubic root of 520001087 is about 804.1457120416.

The spelling of 520001087 in words is "five hundred twenty million, one thousand, eighty-seven".