211355145 has 48 divisors (see below), whose sum is σ = 388065600. Its totient is φ = 106116480.

The previous prime is 211355141. The next prime is 211355167. The reversal of 211355145 is 541553112.

It is not a de Polignac number, because 211355145 - 2² = 211355141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211355141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152355 + ... + 153735.

It is an arithmetic number, because the mean of its divisors is an integer number (8084700).

Almost surely, 2^211355145 is an apocalyptic number.

It is an amenable number.

211355145 is a deficient number, since it is larger than the sum of its proper divisors (176710455).

211355145 is a wasteful number, since it uses less digits than its factorization.

211355145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1587 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 211355145 is about 14538.0585017395. The cubic root of 211355145 is about 595.6680066626.

The spelling of 211355145 in words is "two hundred eleven million, three hundred fifty-five thousand, one hundred forty-five".