61128653 has 2 divisors, whose sum is σ = 61128654. Its totient is φ = 61128652.

The previous prime is 61128647. The next prime is 61128677. The reversal of 61128653 is 35682116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 9259849 = 7202^2 + 3043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61128653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61128853) 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, 30564326 + 30564327.

It is an arithmetic number, because the mean of its divisors is an integer number (30564327).

Almost surely, 2^61128653 is an apocalyptic number.

It is an amenable number.

61128653 is a deficient number, since it is larger than the sum of its proper divisors (1).

61128653 is an equidigital number, since it uses as much as digits as its factorization.

61128653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 61128653 is about 7818.4815021844. The cubic root of 61128653 is about 393.9262683369.

The spelling of 61128653 in words is "sixty-one million, one hundred twenty-eight thousand, six hundred fifty-three".