521143214 has 8 divisors (see below), whose sum is σ = 782230008. Its totient is φ = 260399880.

The previous prime is 521143199. The next prime is 521143241. The reversal of 521143214 is 412341125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 521143214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82037 + ... + 88160.

It is an arithmetic number, because the mean of its divisors is an integer number (97778751).

Almost surely, 2^521143214 is an apocalyptic number.

521143214 is a deficient number, since it is larger than the sum of its proper divisors (261086794).

521143214 is a wasteful number, since it uses less digits than its factorization.

521143214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171730.

The product of its digits is 960, while the sum is 23.

The square root of 521143214 is about 22828.5613650970. The cubic root of 521143214 is about 804.7340216663.

Adding to 521143214 its reverse (412341125), we get a palindrome (933484339).

The spelling of 521143214 in words is "five hundred twenty-one million, one hundred forty-three thousand, two hundred fourteen".