522672221 has 4 divisors (see below), whose sum is σ = 523852512. Its totient is φ = 521491932.

The previous prime is 522672211. The next prime is 522672239. The reversal of 522672221 is 122276225.

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 a de Polignac number, because none of the positive numbers 2^k-522672221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522672211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589481 + ... + 590366.

It is an arithmetic number, because the mean of its divisors is an integer number (130963128).

Almost surely, 2^522672221 is an apocalyptic number.

It is an amenable number.

522672221 is a deficient number, since it is larger than the sum of its proper divisors (1180291).

522672221 is a wasteful number, since it uses less digits than its factorization.

522672221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180290.

The product of its digits is 6720, while the sum is 29.

The square root of 522672221 is about 22862.0257413905. The cubic root of 522672221 is about 805.5202691085.

The spelling of 522672221 in words is "five hundred twenty-two million, six hundred seventy-two thousand, two hundred twenty-one".