520972641 has 20 divisors (see below), whose sum is σ = 889421632. Its totient is φ = 297698328.

The previous prime is 520972619. The next prime is 520972663. The reversal of 520972641 is 146279025.

520972641 is a `hidden beast` number, since 5 + 2 + 0 + 9 + 7 + 2 + 641 = 666.

It is an interprime number because it is at equal distance from previous prime (520972619) and next prime (520972663).

It is not a de Polignac number, because 520972641 - 2⁹ = 520972129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520972596 and 520972605.

It is not an unprimeable number, because it can be changed into a prime (520972141) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 458845 + ... + 459978.

Almost surely, 2^520972641 is an apocalyptic number.

It is an amenable number.

520972641 is a deficient number, since it is larger than the sum of its proper divisors (368448991).

520972641 is an equidigital number, since it uses as much as digits as its factorization.

520972641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918842 (or 918833 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 520972641 is about 22824.8251033825. The cubic root of 520972641 is about 804.6462141492.

The spelling of 520972641 in words is "five hundred twenty million, nine hundred seventy-two thousand, six hundred forty-one".