212245455 has 8 divisors (see below), whose sum is σ = 339592752. Its totient is φ = 113197568.

The previous prime is 212245417. The next prime is 212245457. The reversal of 212245455 is 554542212.

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 212245455 - 2¹¹ = 212243407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212245457) by changing a digit.

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, 7074834 + ... + 7074863.

It is an arithmetic number, because the mean of its divisors is an integer number (42449094).

Almost surely, 2^212245455 is an apocalyptic number.

212245455 is a deficient number, since it is larger than the sum of its proper divisors (127347297).

212245455 is a wasteful number, since it uses less digits than its factorization.

212245455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14149705.

The product of its digits is 16000, while the sum is 30.

The square root of 212245455 is about 14568.6462995022. The cubic root of 212245455 is about 596.5032300334.

Adding to 212245455 its reverse (554542212), we get a palindrome (766787667).

The spelling of 212245455 in words is "two hundred twelve million, two hundred forty-five thousand, four hundred fifty-five".