520622145 has 12 divisors (see below), whose sum is σ = 902411796. Its totient is φ = 277665120.

The previous prime is 520622131. The next prime is 520622191. The reversal of 520622145 is 541226025.

520622145 is a `hidden beast` number, since 5 + 20 + 622 + 14 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 163865601 + 356756544 = 12801^2 + 18888^2 .

It is not a de Polignac number, because 520622145 - 2¹⁰ = 520621121 is a prime.

It is a super-3 number, since 3×520622145³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5784646 + ... + 5784735.

It is an arithmetic number, because the mean of its divisors is an integer number (75200983).

Almost surely, 2^520622145 is an apocalyptic number.

It is an amenable number.

520622145 is a deficient number, since it is larger than the sum of its proper divisors (381789651).

520622145 is a wasteful number, since it uses less digits than its factorization.

520622145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11569392 (or 11569389 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 520622145 is about 22817.1458556937. The cubic root of 520622145 is about 804.4657257530.

The spelling of 520622145 in words is "five hundred twenty million, six hundred twenty-two thousand, one hundred forty-five".