522128881 has 4 divisors (see below), whose sum is σ = 523808064. Its totient is φ = 520449700.

The previous prime is 522128851. The next prime is 522128921. The reversal of 522128881 is 188821225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 522128881 - 2¹⁹ = 521604593 is a prime.

It is a super-2 number, since 2×522128881² = 545237136748624322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522128881.

It is not an unprimeable number, because it can be changed into a prime (522128821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839125 + ... + 839746.

It is an arithmetic number, because the mean of its divisors is an integer number (130952016).

Almost surely, 2^522128881 is an apocalyptic number.

It is an amenable number.

522128881 is a deficient number, since it is larger than the sum of its proper divisors (1679183).

522128881 is a wasteful number, since it uses less digits than its factorization.

522128881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679182.

The product of its digits is 20480, while the sum is 37.

The square root of 522128881 is about 22850.1396275821. The cubic root of 522128881 is about 805.2410481408.

The spelling of 522128881 in words is "five hundred twenty-two million, one hundred twenty-eight thousand, eight hundred eighty-one".