522988261 has 2 divisors, whose sum is σ = 522988262. Its totient is φ = 522988260.

The previous prime is 522988253. The next prime is 522988313. The reversal of 522988261 is 162889225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341547361 + 181440900 = 18481^2 + 13470^2 .

It is a cyclic number.

It is not a de Polignac number, because 522988261 - 2³ = 522988253 is a prime.

It is a super-2 number, since 2×522988261² = 547033442287608242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522988211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261494130 + 261494131.

It is an arithmetic number, because the mean of its divisors is an integer number (261494131).

Almost surely, 2^522988261 is an apocalyptic number.

It is an amenable number.

522988261 is a deficient number, since it is larger than the sum of its proper divisors (1).

522988261 is an equidigital number, since it uses as much as digits as its factorization.

522988261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 522988261 is about 22868.9365953032. The cubic root of 522988261 is about 805.6825922127.

The spelling of 522988261 in words is "five hundred twenty-two million, nine hundred eighty-eight thousand, two hundred sixty-one".