212543475 has 24 divisors (see below), whose sum is σ = 353458032. Its totient is φ = 112694400.

The previous prime is 212543449. The next prime is 212543477. The reversal of 212543475 is 574345212.

It is not a de Polignac number, because 212543475 - 2⁶ = 212543411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212543477) 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 23 ways as a sum of consecutive naturals, for example, 4785 + ... + 21165.

It is an arithmetic number, because the mean of its divisors is an integer number (14727418).

Almost surely, 2^212543475 is an apocalyptic number.

212543475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

212543475 is a deficient number, since it is larger than the sum of its proper divisors (140914557).

212543475 is a wasteful number, since it uses less digits than its factorization.

212543475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16567 (or 16562 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 212543475 is about 14578.8708410494. The cubic root of 212543475 is about 596.7822886254.

Adding to 212543475 its reverse (574345212), we get a palindrome (786888687).

The spelling of 212543475 in words is "two hundred twelve million, five hundred forty-three thousand, four hundred seventy-five".