520632959401 has 27 divisors (see below), whose sum is σ = 546163059351. Its totient is φ = 496275629808.

The previous prime is 520632959387. The next prime is 520632959411. The reversal of 520632959401 is 104959236025.

The square root of 520632959401 is 721549.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 273007295001 + 247625664400 = 522501^2 + 497620^2 .

It is not a de Polignac number, because 520632959401 - 2¹⁵ = 520632926633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520632959411) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2908563930 + ... + 2908564108.

Almost surely, 2^520632959401 is an apocalyptic number.

520632959401 is the 721549-th square number.

520632959401 is the 360775-th centered octagonal number.

It is an amenable number.

520632959401 is a deficient number, since it is larger than the sum of its proper divisors (25530099950).

520632959401 is an frugal number, since it uses more digits than its factorization.

520632959401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 520632959401 in words is "five hundred twenty billion, six hundred thirty-two million, nine hundred fifty-nine thousand, four hundred one".