61055217 has 12 divisors (see below), whose sum is σ = 90574900. Its totient is φ = 39603168.

The previous prime is 61055201. The next prime is 61055219. The reversal of 61055217 is 71255016.

61055217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43086096 + 17969121 = 6564^2 + 4239^2 .

It is not a de Polignac number, because 61055217 - 2⁴ = 61055201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61055219) 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 11 ways as a sum of consecutive naturals, for example, 91342 + ... + 92007.

Almost surely, 2^61055217 is an apocalyptic number.

It is an amenable number.

61055217 is a deficient number, since it is larger than the sum of its proper divisors (29519683).

61055217 is a wasteful number, since it uses less digits than its factorization.

61055217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183392 (or 183389 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 61055217 is about 7813.7837825218. The cubic root of 61055217 is about 393.7684593009.

The spelling of 61055217 in words is "sixty-one million, fifty-five thousand, two hundred seventeen".