522121871 has 6 divisors (see below), whose sum is σ = 539508816. Its totient is φ = 505278300.

The previous prime is 522121861. The next prime is 522121889. The reversal of 522121871 is 178121225.

It is not a de Polignac number, because 522121871 - 2¹⁴ = 522105487 is a prime.

It is a super-2 number, since 2×522121871² = 545222496353081282, 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 (522121841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270695 + ... + 272616.

It is an arithmetic number, because the mean of its divisors is an integer number (89918136).

Almost surely, 2^522121871 is an apocalyptic number.

522121871 is a deficient number, since it is larger than the sum of its proper divisors (17386945).

522121871 is an equidigital number, since it uses as much as digits as its factorization.

522121871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543373 (or 543342 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 522121871 is about 22849.9862363197. The cubic root of 522121871 is about 805.2374444552.

The spelling of 522121871 in words is "five hundred twenty-two million, one hundred twenty-one thousand, eight hundred seventy-one".