61211 has 2 divisors, whose sum is σ = 61212.
Its totient is φ = 61210.
The previous prime is 61169. The next prime is 61223. The reversal of 61211 is 11216.
It is a m-pointer prime, because the next prime (61223) can be obtained adding 61211 to its product of digits (12).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-61211 is a prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 61192 and 61201.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 61211.
It is not a weakly prime, because it can be changed into another prime (61231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605 + 30606.
It is an arithmetic number, because the mean of its divisors is an integer number (30606).
261211 is an apocalyptic number.
61211 is a deficient number, since it is larger than the sum of its proper divisors (1).
61211 is an equidigital number, since it uses as much as digits as its factorization.
61211 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 12, while the sum is 11.
The square root of 61211 is about 247.4085689704.
The cubic root of 61211 is about 39.4103076263.
Adding to 61211 its reverse (11216), we get a palindrome (72427).
It can be divided in two parts, 61 and 211, that added together give a palindrome (272).
The spelling of 61211 in words is "sixty-one thousand, two hundred eleven".