520652121 has 16 divisors (see below), whose sum is σ = 763281408. Its totient is φ = 313059600.

The previous prime is 520652113. The next prime is 520652129. The reversal of 520652121 is 121256025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520652113) and next prime (520652129).

It is not a de Polignac number, because 520652121 - 2³ = 520652113 is a prime.

It is a super-2 number, since 2×520652121² = 542157262203597282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520652091 and 520652100.

It is not an unprimeable number, because it can be changed into a prime (520652129) by changing a digit.

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, 57925 + ... + 66306.

It is an arithmetic number, because the mean of its divisors is an integer number (47705088).

Almost surely, 2^520652121 is an apocalyptic number.

It is an amenable number.

520652121 is a deficient number, since it is larger than the sum of its proper divisors (242629287).

520652121 is a wasteful number, since it uses less digits than its factorization.

520652121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124372.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 520652121 is about 22817.8027206828. The cubic root of 520652121 is about 804.4811651025.

The spelling of 520652121 in words is "five hundred twenty million, six hundred fifty-two thousand, one hundred twenty-one".