520289961 has 8 divisors (see below), whose sum is σ = 700203744. Its totient is φ = 343618080.

The previous prime is 520289951. The next prime is 520290013. The reversal of 520289961 is 169982025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520289961 - 2⁵ = 520289929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520289941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810100 + ... + 810741.

It is an arithmetic number, because the mean of its divisors is an integer number (87525468).

Almost surely, 2^520289961 is an apocalyptic number.

It is an amenable number.

520289961 is a deficient number, since it is larger than the sum of its proper divisors (179913783).

520289961 is a wasteful number, since it uses less digits than its factorization.

520289961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620951.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 520289961 is about 22809.8654314312. The cubic root of 520289961 is about 804.2945923625.

The spelling of 520289961 in words is "five hundred twenty million, two hundred eighty-nine thousand, nine hundred sixty-one".