211045506 has 16 divisors (see below), whose sum is σ = 482389824. Its totient is φ = 60298704.

The previous prime is 211045501. The next prime is 211045547. The reversal of 211045506 is 605540112.

It is not an unprimeable number, because it can be changed into a prime (211045501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512405 + ... + 2512488.

It is an arithmetic number, because the mean of its divisors is an integer number (30149364).

Almost surely, 2^211045506 is an apocalyptic number.

211045506 is an abundant number, since it is smaller than the sum of its proper divisors (271344318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211045506 is a wasteful number, since it uses less digits than its factorization.

211045506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024905.

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

The square root of 211045506 is about 14527.4053430060. The cubic root of 211045506 is about 595.3769764638.

Adding to 211045506 its reverse (605540112), we get a palindrome (816585618).

The spelling of 211045506 in words is "two hundred eleven million, forty-five thousand, five hundred six".