211617049 has 16 divisors (see below), whose sum is σ = 245605248. Its totient is φ = 178584192.

The previous prime is 211617047. The next prime is 211617073. The reversal of 211617049 is 940716112.

It is a cyclic number.

It is not a de Polignac number, because 211617049 - 2¹ = 211617047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211617049.

It is not an unprimeable number, because it can be changed into a prime (211617047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265119 + ... + 265915.

It is an arithmetic number, because the mean of its divisors is an integer number (15350328).

Almost surely, 2^211617049 is an apocalyptic number.

It is an amenable number.

211617049 is a deficient number, since it is larger than the sum of its proper divisors (33988199).

211617049 is an equidigital number, since it uses as much as digits as its factorization.

211617049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 211617049 is about 14547.0632431429. The cubic root of 211617049 is about 595.9139488469.

The spelling of 211617049 in words is "two hundred eleven million, six hundred seventeen thousand, forty-nine".