211052045 has 4 divisors (see below), whose sum is σ = 253262460. Its totient is φ = 168841632.

The previous prime is 211051987. The next prime is 211052063. The reversal of 211052045 is 540250112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 140256649 + 70795396 = 11843^2 + 8414^2 .

It is a cyclic number.

It is not a de Polignac number, because 211052045 - 2²² = 206857741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21105200 + ... + 21105209.

It is an arithmetic number, because the mean of its divisors is an integer number (63315615).

Almost surely, 2^211052045 is an apocalyptic number.

It is an amenable number.

211052045 is a deficient number, since it is larger than the sum of its proper divisors (42210415).

211052045 is an equidigital number, since it uses as much as digits as its factorization.

211052045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42210414.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 211052045 is about 14527.6303986576. The cubic root of 211052045 is about 595.3831254218.

The spelling of 211052045 in words is "two hundred eleven million, fifty-two thousand, forty-five".