211642252 has 6 divisors (see below), whose sum is σ = 370373948. Its totient is φ = 105821124.

The previous prime is 211642229. The next prime is 211642283. The reversal of 211642252 is 252246112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26455278 + ... + 26455285.

Almost surely, 2^211642252 is an apocalyptic number.

It is an amenable number.

211642252 is a deficient number, since it is larger than the sum of its proper divisors (158731696).

211642252 is a wasteful number, since it uses less digits than its factorization.

211642252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52910567 (or 52910565 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 211642252 is about 14547.9294746710. The cubic root of 211642252 is about 595.9376051373.

Adding to 211642252 its reverse (252246112), we get a palindrome (463888364).

The spelling of 211642252 in words is "two hundred eleven million, six hundred forty-two thousand, two hundred fifty-two".