61143211 has 2 divisors, whose sum is σ = 61143212. Its totient is φ = 61143210.

The previous prime is 61143157. The next prime is 61143221. The reversal of 61143211 is 11234116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61143211 - 2⁹ = 61142699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61143221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30571605 + 30571606.

It is an arithmetic number, because the mean of its divisors is an integer number (30571606).

Almost surely, 2^61143211 is an apocalyptic number.

61143211 is a deficient number, since it is larger than the sum of its proper divisors (1).

61143211 is an equidigital number, since it uses as much as digits as its factorization.

61143211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 61143211 is about 7819.4124459578. The cubic root of 61143211 is about 393.9575374888.

Adding to 61143211 its reverse (11234116), we get a palindrome (72377327).

The spelling of 61143211 in words is "sixty-one million, one hundred forty-three thousand, two hundred eleven".