972211 has 4 divisors (see below), whose sum is σ = 1023400. Its totient is φ = 921024.

The previous prime is 972199. The next prime is 972221. The reversal of 972211 is 112279.

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

It is a cyclic number.

It is not a de Polignac number, because 972211 - 2⁹ = 971699 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (972221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25566 + ... + 25603.

It is an arithmetic number, because the mean of its divisors is an integer number (255850).

2⁹⁷²²¹¹ is an apocalyptic number.

972211 is a deficient number, since it is larger than the sum of its proper divisors (51189).

972211 is a wasteful number, since it uses less digits than its factorization.

972211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51188.

The product of its digits is 252, while the sum is 22.

The square root of 972211 is about 986.0076064615. The cubic root of 972211 is about 99.0649847121.

The spelling of 972211 in words is "nine hundred seventy-two thousand, two hundred eleven".