520017091 has 16 divisors (see below), whose sum is σ = 582278400. Its totient is φ = 460404000.

The previous prime is 520017059. The next prime is 520017133. The reversal of 520017091 is 190710025.

It is a cyclic number.

It is not a de Polignac number, because 520017091 - 2⁵ = 520017059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520017041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67066 + ... + 74416.

It is an arithmetic number, because the mean of its divisors is an integer number (36392400).

Almost surely, 2^520017091 is an apocalyptic number.

520017091 is a deficient number, since it is larger than the sum of its proper divisors (62261309).

520017091 is a wasteful number, since it uses less digits than its factorization.

520017091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 520017091 is about 22803.8832438688. The cubic root of 520017091 is about 804.1539616500.

The spelling of 520017091 in words is "five hundred twenty million, seventeen thousand, ninety-one".