522663421 has 4 divisors (see below), whose sum is σ = 597329632. Its totient is φ = 447997212.

The previous prime is 522663413. The next prime is 522663439. The reversal of 522663421 is 124366225.

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 522663421 - 2³ = 522663413 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 (522663461) 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, 37333095 + ... + 37333108.

It is an arithmetic number, because the mean of its divisors is an integer number (149332408).

Almost surely, 2^522663421 is an apocalyptic number.

It is an amenable number.

522663421 is a deficient number, since it is larger than the sum of its proper divisors (74666211).

522663421 is an equidigital number, since it uses as much as digits as its factorization.

522663421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74666210.

The product of its digits is 17280, while the sum is 31.

The square root of 522663421 is about 22861.8332816946. The cubic root of 522663421 is about 805.5157483541.

The spelling of 522663421 in words is "five hundred twenty-two million, six hundred sixty-three thousand, four hundred twenty-one".