211145450 has 12 divisors (see below), whose sum is σ = 392730630. Its totient is φ = 84458160.

The previous prime is 211145411. The next prime is 211145489. The reversal of 211145450 is 54541112.

It is an interprime number because it is at equal distance from previous prime (211145411) and next prime (211145489).

It can be written as a sum of positive squares in 3 ways, for example, as 203946961 + 7198489 = 14281^2 + 2683^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2111405 + ... + 2111504.

Almost surely, 2^211145450 is an apocalyptic number.

211145450 is a deficient number, since it is larger than the sum of its proper divisors (181585180).

211145450 is a wasteful number, since it uses less digits than its factorization.

211145450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222921 (or 4222916 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 211145450 is about 14530.8447792962. The cubic root of 211145450 is about 595.4709450855.

Adding to 211145450 its reverse (54541112), we get a palindrome (265686562).

The spelling of 211145450 in words is "two hundred eleven million, one hundred forty-five thousand, four hundred fifty".