520753721131 has 8 divisors (see below), whose sum is σ = 595173233664. Its totient is φ = 446340739560.

The previous prime is 520753721113. The next prime is 520753721141. The reversal of 520753721131 is 131127357025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520753721131 - 2⁷ = 520753721003 is a prime.

It is a super-2 number, since 2×520753721131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520753721141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460665 + ... + 1781866.

It is an arithmetic number, because the mean of its divisors is an integer number (74396654208).

Almost surely, 2^520753721131 is an apocalyptic number.

520753721131 is a deficient number, since it is larger than the sum of its proper divisors (74419512533).

520753721131 is a wasteful number, since it uses less digits than its factorization.

520753721131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265481.

The product of its (nonzero) digits is 44100, while the sum is 37.

The spelling of 520753721131 in words is "five hundred twenty billion, seven hundred fifty-three million, seven hundred twenty-one thousand, one hundred thirty-one".