212055471 has 6 divisors (see below), whose sum is σ = 306302360. Its totient is φ = 141370308.

The previous prime is 212055451. The next prime is 212055479. The reversal of 212055471 is 174550212.

212055471 is a `hidden beast` number, since 21 + 20 + 554 + 71 = 666.

It is not a de Polignac number, because 212055471 - 2⁹ = 212054959 is a prime.

It is a super-3 number, since 3×212055471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212055479) 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 5 ways as a sum of consecutive naturals, for example, 11780851 + ... + 11780868.

Almost surely, 2^212055471 is an apocalyptic number.

212055471 is a deficient number, since it is larger than the sum of its proper divisors (94246889).

212055471 is a wasteful number, since it uses less digits than its factorization.

212055471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23561725 (or 23561722 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 212055471 is about 14562.1245359322. The cubic root of 212055471 is about 596.3251973247.

The spelling of 212055471 in words is "two hundred twelve million, fifty-five thousand, four hundred seventy-one".