520245605 has 16 divisors (see below), whose sum is σ = 696890304. Its totient is φ = 369559680.

The previous prime is 520245599. The next prime is 520245643. The reversal of 520245605 is 506542025.

It is not a de Polignac number, because 520245605 - 2⁶ = 520245541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107624 + ... + 112353.

It is an arithmetic number, because the mean of its divisors is an integer number (43555644).

Almost surely, 2^520245605 is an apocalyptic number.

520245605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520245605 is a deficient number, since it is larger than the sum of its proper divisors (176644699).

520245605 is a wasteful number, since it uses less digits than its factorization.

520245605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220036.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 520245605 is about 22808.8931121175. The cubic root of 520245605 is about 804.2717356817.

The spelling of 520245605 in words is "five hundred twenty million, two hundred forty-five thousand, six hundred five".