521114421 has 8 divisors (see below), whose sum is σ = 703190880. Its totient is φ = 343223792.

The previous prime is 521114393. The next prime is 521114431. The reversal of 521114421 is 124411125.

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 521114421 - 2⁹ = 521113909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521114431) 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 7 ways as a sum of consecutive naturals, for example, 1046166 + ... + 1046663.

It is an arithmetic number, because the mean of its divisors is an integer number (87898860).

Almost surely, 2^521114421 is an apocalyptic number.

It is an amenable number.

521114421 is a deficient number, since it is larger than the sum of its proper divisors (182076459).

521114421 is a wasteful number, since it uses less digits than its factorization.

521114421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092915.

The product of its digits is 320, while the sum is 21.

The square root of 521114421 is about 22827.9307209392. The cubic root of 521114421 is about 804.7192009588.

Adding to 521114421 its reverse (124411125), we get a palindrome (645525546).

The spelling of 521114421 in words is "five hundred twenty-one million, one hundred fourteen thousand, four hundred twenty-one".