211375172 has 12 divisors (see below), whose sum is σ = 378928956. Its totient is φ = 103109760.

The previous prime is 211375159. The next prime is 211375207. The reversal of 211375172 is 271573112.

It can be written as a sum of positive squares in 2 ways, for example, as 115648516 + 95726656 = 10754^2 + 9784^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644273 + ... + 644600.

It is an arithmetic number, because the mean of its divisors is an integer number (31577413).

Almost surely, 2^211375172 is an apocalyptic number.

It is an amenable number.

211375172 is a deficient number, since it is larger than the sum of its proper divisors (167553784).

211375172 is a wasteful number, since it uses less digits than its factorization.

211375172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288918 (or 1288916 counting only the distinct ones).

The product of its digits is 2940, while the sum is 29.

The square root of 211375172 is about 14538.7472637776. The cubic root of 211375172 is about 595.6868202830.

The spelling of 211375172 in words is "two hundred eleven million, three hundred seventy-five thousand, one hundred seventy-two".