521214422 has 16 divisors (see below), whose sum is σ = 823446000. Its totient is φ = 246748320.

The previous prime is 521214413. The next prime is 521214433. The reversal of 521214422 is 224412125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94172 + ... + 99552.

It is an arithmetic number, because the mean of its divisors is an integer number (51465375).

Almost surely, 2^521214422 is an apocalyptic number.

521214422 is a deficient number, since it is larger than the sum of its proper divisors (302231578).

521214422 is a wasteful number, since it uses less digits than its factorization.

521214422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7951.

The product of its digits is 1280, while the sum is 23.

The square root of 521214422 is about 22830.1209370428. The cubic root of 521214422 is about 804.7706724301.

Adding to 521214422 its reverse (224412125), we get a palindrome (745626547).

The spelling of 521214422 in words is "five hundred twenty-one million, two hundred fourteen thousand, four hundred twenty-two".