520214869 has 2 divisors, whose sum is σ = 520214870. Its totient is φ = 520214868.

The previous prime is 520214837. The next prime is 520214873. The reversal of 520214869 is 968412025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458388100 + 61826769 = 21410^2 + 7863^2 .

It is a cyclic number.

It is not a de Polignac number, because 520214869 - 2⁵ = 520214837 is a prime.

It is a super-2 number, since 2×520214869² = 541247019857374322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520214899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260107434 + 260107435.

It is an arithmetic number, because the mean of its divisors is an integer number (260107435).

Almost surely, 2^520214869 is an apocalyptic number.

It is an amenable number.

520214869 is a deficient number, since it is larger than the sum of its proper divisors (1).

520214869 is an equidigital number, since it uses as much as digits as its factorization.

520214869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 520214869 is about 22808.2193298819. The cubic root of 520214869 is about 804.2558966352.

The spelling of 520214869 in words is "five hundred twenty million, two hundred fourteen thousand, eight hundred sixty-nine".