212455285 has 8 divisors (see below), whose sum is σ = 291367296. Its totient is φ = 145683600.

The previous prime is 212455277. The next prime is 212455297. The reversal of 212455285 is 582554212.

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

It is not a de Polignac number, because 212455285 - 2³ = 212455277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212455285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3035041 + ... + 3035110.

It is an arithmetic number, because the mean of its divisors is an integer number (36420912).

Almost surely, 2^212455285 is an apocalyptic number.

It is an amenable number.

212455285 is a deficient number, since it is larger than the sum of its proper divisors (78912011).

212455285 is an equidigital number, since it uses as much as digits as its factorization.

212455285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070163.

The product of its digits is 32000, while the sum is 34.

The square root of 212455285 is about 14575.8459445756. The cubic root of 212455285 is about 596.6997368699.

The spelling of 212455285 in words is "two hundred twelve million, four hundred fifty-five thousand, two hundred eighty-five".