211952045 has 8 divisors (see below), whose sum is σ = 254440824. Its totient is φ = 169496064.

The previous prime is 211952033. The next prime is 211952071. The reversal of 211952045 is 540259112.

It can be written as a sum of positive squares in 4 ways, for example, as 73324969 + 138627076 = 8563^2 + 11774^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211952045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211951999 and 211952017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9497 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (31805103).

Almost surely, 2^211952045 is an apocalyptic number.

It is an amenable number.

211952045 is a deficient number, since it is larger than the sum of its proper divisors (42488779).

211952045 is a wasteful number, since it uses less digits than its factorization.

211952045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16399.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 211952045 is about 14558.5729039628. The cubic root of 211952045 is about 596.2282328225.

The spelling of 211952045 in words is "two hundred eleven million, nine hundred fifty-two thousand, forty-five".