211066253 has 4 divisors (see below), whose sum is σ = 212728320. Its totient is φ = 209404188.

The previous prime is 211066249. The next prime is 211066279. The reversal of 211066253 is 352660112.

211066253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211066253 - 2² = 211066249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211066223) 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, 830843 + ... + 831096.

It is an arithmetic number, because the mean of its divisors is an integer number (53182080).

Almost surely, 2^211066253 is an apocalyptic number.

It is an amenable number.

211066253 is a deficient number, since it is larger than the sum of its proper divisors (1662067).

211066253 is a wasteful number, since it uses less digits than its factorization.

211066253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662066.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 211066253 is about 14528.1193896526. The cubic root of 211066253 is about 595.3964854971.

The spelling of 211066253 in words is "two hundred eleven million, sixty-six thousand, two hundred fifty-three".