4521213 has 12 divisors (see below), whose sum is σ = 6549088. Its totient is φ = 3005640.

The previous prime is 4521173. The next prime is 4521217. The reversal of 4521213 is 3121254.

4521213 is a `hidden beast` number, since 452 + 1 + 213 = 666.

It is not a de Polignac number, because 4521213 - 2¹³ = 4513021 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 (4521217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5856 + ... + 6582.

Almost surely, 2^4521213 is an apocalyptic number.

It is an amenable number.

4521213 is a deficient number, since it is larger than the sum of its proper divisors (2027875).

4521213 is a wasteful number, since it uses less digits than its factorization.

4521213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1421 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 4521213 is about 2126.3144170136. The cubic root of 4521213 is about 165.3553772889.

Adding to 4521213 its reverse (3121254), we get a palindrome (7642467).

The spelling of 4521213 in words is "four million, five hundred twenty-one thousand, two hundred thirteen".