522441661 has 4 divisors (see below), whose sum is σ = 597076192. Its totient is φ = 447807132.

The previous prime is 522441653. The next prime is 522441713. The reversal of 522441661 is 166144225.

It is a happy number.

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 522441661 - 2³ = 522441653 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 (522441761) 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 3 ways as a sum of consecutive naturals, for example, 37317255 + ... + 37317268.

It is an arithmetic number, because the mean of its divisors is an integer number (149269048).

Almost surely, 2^522441661 is an apocalyptic number.

It is an amenable number.

522441661 is a deficient number, since it is larger than the sum of its proper divisors (74634531).

522441661 is an equidigital number, since it uses as much as digits as its factorization.

522441661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74634530.

The product of its digits is 11520, while the sum is 31.

The square root of 522441661 is about 22856.9827623858. The cubic root of 522441661 is about 805.4018085892.

Adding to 522441661 its reverse (166144225), we get a palindrome (688585886).

The spelling of 522441661 in words is "five hundred twenty-two million, four hundred forty-one thousand, six hundred sixty-one".