211761052 has 12 divisors (see below), whose sum is σ = 371577976. Its totient is φ = 105595920.

The previous prime is 211761047. The next prime is 211761091. The reversal of 211761052 is 250167112.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 69474 + ... + 72457.

Almost surely, 2^211761052 is an apocalyptic number.

It is an amenable number.

211761052 is a deficient number, since it is larger than the sum of its proper divisors (159816924).

211761052 is a wasteful number, since it uses less digits than its factorization.

211761052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142308 (or 142306 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 211761052 is about 14552.0119571144. The cubic root of 211761052 is about 596.0490890906.

The spelling of 211761052 in words is "two hundred eleven million, seven hundred sixty-one thousand, fifty-two".