61196221 has 2 divisors, whose sum is σ = 61196222. Its totient is φ = 61196220.

The previous prime is 61196171. The next prime is 61196269. The reversal of 61196221 is 12269116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 21996100 = 6261^2 + 4690^2 .

It is a cyclic number.

It is not a de Polignac number, because 61196221 - 2¹¹ = 61194173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61196221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61196521) by changing a digit.

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 as a sum of consecutive naturals, namely, 30598110 + 30598111.

It is an arithmetic number, because the mean of its divisors is an integer number (30598111).

Almost surely, 2^61196221 is an apocalyptic number.

It is an amenable number.

61196221 is a deficient number, since it is larger than the sum of its proper divisors (1).

61196221 is an equidigital number, since it uses as much as digits as its factorization.

61196221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 28.

The square root of 61196221 is about 7822.8013524568. The cubic root of 61196221 is about 394.0713558309.

The spelling of 61196221 in words is "sixty-one million, one hundred ninety-six thousand, two hundred twenty-one".