211145563 has 2 divisors, whose sum is σ = 211145564. Its totient is φ = 211145562.

The previous prime is 211145533. The next prime is 211145579. The reversal of 211145563 is 365541112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211145563 - 2¹⁷ = 211014491 is a prime.

It is not a weakly prime, because it can be changed into another prime (211145503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105572781 + 105572782.

It is an arithmetic number, because the mean of its divisors is an integer number (105572782).

Almost surely, 2^211145563 is an apocalyptic number.

211145563 is a deficient number, since it is larger than the sum of its proper divisors (1).

211145563 is an equidigital number, since it uses as much as digits as its factorization.

211145563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 211145563 is about 14530.8486675762. The cubic root of 211145563 is about 595.4710513128.

Adding to 211145563 its reverse (365541112), we get a palindrome (576686675).

It can be divided in two parts, 2111 and 45563, that added together give a palindrome (47674).

The spelling of 211145563 in words is "two hundred eleven million, one hundred forty-five thousand, five hundred sixty-three".