212552813 has 8 divisors (see below), whose sum is σ = 232096800. Its totient is φ = 193045680.

The previous prime is 212552807. The next prime is 212552849. The reversal of 212552813 is 318255212.

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

It is a cyclic number.

It is not a de Polignac number, because 212552813 - 2⁴ = 212552797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212852813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3638 + ... + 20936.

It is an arithmetic number, because the mean of its divisors is an integer number (29012100).

Almost surely, 2^212552813 is an apocalyptic number.

It is an amenable number.

212552813 is a deficient number, since it is larger than the sum of its proper divisors (19543987).

212552813 is a wasteful number, since it uses less digits than its factorization.

212552813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18427.

The product of its digits is 4800, while the sum is 29.

The square root of 212552813 is about 14579.1910955306. The cubic root of 212552813 is about 596.7910282827.

The spelling of 212552813 in words is "two hundred twelve million, five hundred fifty-two thousand, eight hundred thirteen".