212144552 has 8 divisors (see below), whose sum is σ = 397771050. Its totient is φ = 106072272.

The previous prime is 212144551. The next prime is 212144627. The reversal of 212144552 is 255441212.

It can be written as a sum of positive squares in only one way, i.e., 120253156 + 91891396 = 10966^2 + 9586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (212144551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13259027 + ... + 13259042.

Almost surely, 2^212144552 is an apocalyptic number.

It is an amenable number.

212144552 is a deficient number, since it is larger than the sum of its proper divisors (185626498).

212144552 is a wasteful number, since it uses less digits than its factorization.

212144552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26518075 (or 26518071 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 212144552 is about 14565.1828687456. The cubic root of 212144552 is about 596.4086877560.

Adding to 212144552 its reverse (255441212), we get a palindrome (467585764).

The spelling of 212144552 in words is "two hundred twelve million, one hundred forty-four thousand, five hundred fifty-two".