8521214 has 8 divisors (see below), whose sum is σ = 13765080. Its totient is φ = 3932856.

The previous prime is 8521213. The next prime is 8521223. The reversal of 8521214 is 4121258.

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

It is a super-2 number, since 2×8521214² = 145222176067592, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8521214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163844 + ... + 163895.

It is an arithmetic number, because the mean of its divisors is an integer number (1720635).

Almost surely, 2^8521214 is an apocalyptic number.

8521214 is a deficient number, since it is larger than the sum of its proper divisors (5243866).

8521214 is a wasteful number, since it uses less digits than its factorization.

8521214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327754.

The product of its digits is 640, while the sum is 23.

The square root of 8521214 is about 2919.1118512315. Note that the first 3 decimals coincide. The cubic root of 8521214 is about 204.2523948928.

The spelling of 8521214 in words is "eight million, five hundred twenty-one thousand, two hundred fourteen".