213004455 has 32 divisors (see below), whose sum is σ = 350161920. Its totient is φ = 110524800.

The previous prime is 213004453. The next prime is 213004483. The reversal of 213004455 is 554400312.

It is not a de Polignac number, because 213004455 - 2¹ = 213004453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213004453) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 88194 + ... + 90576.

It is an arithmetic number, because the mean of its divisors is an integer number (10942560).

Almost surely, 2^213004455 is an apocalyptic number.

213004455 is a deficient number, since it is larger than the sum of its proper divisors (137157465).

213004455 is a wasteful number, since it uses less digits than its factorization.

213004455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 213004455 is about 14594.6721443135. The cubic root of 213004455 is about 597.2134255956.

Adding to 213004455 its reverse (554400312), we get a palindrome (767404767).

The spelling of 213004455 in words is "two hundred thirteen million, four thousand, four hundred fifty-five".