211152745 has 4 divisors (see below), whose sum is σ = 253383300. Its totient is φ = 168922192.

The previous prime is 211152713. The next prime is 211152763. The reversal of 211152745 is 547251112.

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 133148521 + 78004224 = 11539^2 + 8832^2 .

It is a cyclic number.

It is not a de Polignac number, because 211152745 - 2⁵ = 211152713 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21115270 + ... + 21115279.

It is an arithmetic number, because the mean of its divisors is an integer number (63345825).

Almost surely, 2^211152745 is an apocalyptic number.

It is an amenable number.

211152745 is a deficient number, since it is larger than the sum of its proper divisors (42230555).

211152745 is an equidigital number, since it uses as much as digits as its factorization.

211152745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42230554.

The product of its digits is 2800, while the sum is 28.

The square root of 211152745 is about 14531.0957948807. The cubic root of 211152745 is about 595.4778027761.

The spelling of 211152745 in words is "two hundred eleven million, one hundred fifty-two thousand, seven hundred forty-five".