212045455 has 16 divisors (see below), whose sum is σ = 259519104. Its totient is φ = 166279680.

The previous prime is 212045447. The next prime is 212045479. The reversal of 212045455 is 554540212.

It is not a de Polignac number, because 212045455 - 2³ = 212045447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101754 + ... + 103816.

It is an arithmetic number, because the mean of its divisors is an integer number (16219944).

Almost surely, 2^212045455 is an apocalyptic number.

212045455 is a deficient number, since it is larger than the sum of its proper divisors (47473649).

212045455 is a wasteful number, since it uses less digits than its factorization.

212045455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 212045455 is about 14561.7806260086. The cubic root of 212045455 is about 596.3158084493.

Adding to 212045455 its reverse (554540212), we get a palindrome (766585667).

The spelling of 212045455 in words is "two hundred twelve million, forty-five thousand, four hundred fifty-five".