211140052 has 12 divisors (see below), whose sum is σ = 370045620. Its totient is φ = 105412736.

The previous prime is 211140049. The next prime is 211140053. The reversal of 211140052 is 250041112.

It can be written as a sum of positive squares in 2 ways, for example, as 185068816 + 26071236 = 13604^2 + 5106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211140053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36277 + ... + 41692.

It is an arithmetic number, because the mean of its divisors is an integer number (30837135).

Almost surely, 2^211140052 is an apocalyptic number.

It is an amenable number.

211140052 is a deficient number, since it is larger than the sum of its proper divisors (158905568).

211140052 is a wasteful number, since it uses less digits than its factorization.

211140052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78650 (or 78648 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 211140052 is about 14530.6590352950. The cubic root of 211140052 is about 595.4658705748.

Adding to 211140052 its reverse (250041112), we get a palindrome (461181164).

The spelling of 211140052 in words is "two hundred eleven million, one hundred forty thousand, fifty-two".