61045889 has 2 divisors, whose sum is σ = 61045890. Its totient is φ = 61045888.

The previous prime is 61045849. The next prime is 61045921. The reversal of 61045889 is 98854016.

61045889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 330625 = 7792^2 + 575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61045889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61045849) 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 as a sum of consecutive naturals, namely, 30522944 + 30522945.

It is an arithmetic number, because the mean of its divisors is an integer number (30522945).

Almost surely, 2^61045889 is an apocalyptic number.

It is an amenable number.

61045889 is a deficient number, since it is larger than the sum of its proper divisors (1).

61045889 is an equidigital number, since it uses as much as digits as its factorization.

61045889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 61045889 is about 7813.1868658058. The cubic root of 61045889 is about 393.7484049990.

The spelling of 61045889 in words is "sixty-one million, forty-five thousand, eight hundred eighty-nine".