522255221 has 8 divisors (see below), whose sum is σ = 531492024. Its totient is φ = 513040320.

The previous prime is 522255193. The next prime is 522255241. The reversal of 522255221 is 122552225.

It can be written as a sum of positive squares in 4 ways, for example, as 35832196 + 486423025 = 5986^2 + 22055^2 .

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 522255221 - 2⁶ = 522255157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522255241) 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, 47015 + ... + 57051.

It is an arithmetic number, because the mean of its divisors is an integer number (66436503).

Almost surely, 2^522255221 is an apocalyptic number.

It is an amenable number.

522255221 is a deficient number, since it is larger than the sum of its proper divisors (9236803).

522255221 is a wasteful number, since it uses less digits than its factorization.

522255221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10951.

The product of its digits is 4000, while the sum is 26.

The square root of 522255221 is about 22852.9039948975. The cubic root of 522255221 is about 805.3059912058.

The spelling of 522255221 in words is "five hundred twenty-two million, two hundred fifty-five thousand, two hundred twenty-one".