211145253 has 16 divisors (see below), whose sum is σ = 325187136. Its totient is φ = 120439040.

The previous prime is 211145251. The next prime is 211145261. The reversal of 211145253 is 352541112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211145253 - 2¹ = 211145251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211145251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187626 + ... + 188747.

It is an arithmetic number, because the mean of its divisors is an integer number (20324196).

Almost surely, 2^211145253 is an apocalyptic number.

It is an amenable number.

211145253 is a deficient number, since it is larger than the sum of its proper divisors (114041883).

211145253 is a wasteful number, since it uses less digits than its factorization.

211145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376404.

The product of its digits is 1200, while the sum is 24.

The square root of 211145253 is about 14530.8380006110. The cubic root of 211145253 is about 595.4707598928.

Adding to 211145253 its reverse (352541112), we get a palindrome (563686365).

The spelling of 211145253 in words is "two hundred eleven million, one hundred forty-five thousand, two hundred fifty-three".