522545024222021 has 8 divisors (see below), whose sum is σ = 541304519477400. Its totient is φ = 504071933474560.

The previous prime is 522545024221973. The next prime is 522545024222027. The reversal of 522545024222021 is 120222420545225.

It can be written as a sum of positive squares in 4 ways, for example, as 222110493796 + 522322913728225 = 471286^2 + 22854385^2 .

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 522545024222021 - 2¹⁰ = 522545024220997 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 (522545024222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71601123266 + ... + 71601130563.

It is an arithmetic number, because the mean of its divisors is an integer number (67663064934675).

Almost surely, 2^{522545024222021} is an apocalyptic number.

It is an amenable number.

522545024222021 is a deficient number, since it is larger than the sum of its proper divisors (18759495255379).

522545024222021 is a wasteful number, since it uses less digits than its factorization.

522545024222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143202253959.

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 522545024222021 its reverse (120222420545225), we get a palindrome (642767444767246).

The spelling of 522545024222021 in words is "five hundred twenty-two trillion, five hundred forty-five billion, twenty-four million, two hundred twenty-two thousand, twenty-one".