522652981 has 8 divisors (see below), whose sum is σ = 563839704. Its totient is φ = 482626560.

The previous prime is 522652961. The next prime is 522652987. The reversal of 522652981 is 189256225.

It can be written as a sum of positive squares in 4 ways, for example, as 162792081 + 359860900 = 12759^2 + 18970^2 .

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 522652981 - 2⁷ = 522652853 is a prime.

It is a super-2 number, since 2×522652981² = 546332277096372722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522652987) 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, 289140 + ... + 290941.

It is an arithmetic number, because the mean of its divisors is an integer number (70479963).

Almost surely, 2^522652981 is an apocalyptic number.

It is an amenable number.

522652981 is a deficient number, since it is larger than the sum of its proper divisors (41186723).

522652981 is a wasteful number, since it uses less digits than its factorization.

522652981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580151.

The product of its digits is 86400, while the sum is 40.

The square root of 522652981 is about 22861.6049524087. The cubic root of 522652981 is about 805.5103850298.

The spelling of 522652981 in words is "five hundred twenty-two million, six hundred fifty-two thousand, nine hundred eighty-one".