213554217 has 16 divisors (see below), whose sum is σ = 292248000. Its totient is φ = 138659904.

The previous prime is 213554213. The next prime is 213554219. The reversal of 213554217 is 712455312.

It is not a de Polignac number, because 213554217 - 2² = 213554213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213554213) 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 15 ways as a sum of consecutive naturals, for example, 13759 + ... + 24827.

It is an arithmetic number, because the mean of its divisors is an integer number (18265500).

Almost surely, 2^213554217 is an apocalyptic number.

It is an amenable number.

213554217 is a deficient number, since it is larger than the sum of its proper divisors (78693783).

213554217 is a wasteful number, since it uses less digits than its factorization.

213554217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11240.

The product of its digits is 8400, while the sum is 30.

The square root of 213554217 is about 14613.4943459804. The cubic root of 213554217 is about 597.7267844731.

The spelling of 213554217 in words is "two hundred thirteen million, five hundred fifty-four thousand, two hundred seventeen".