53748661 has 2 divisors, whose sum is σ = 53748662. Its totient is φ = 53748660.

The previous prime is 53748619. The next prime is 53748689. The reversal of 53748661 is 16684735.

It is a happy number.

53748661 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., 51480625 + 2268036 = 7175^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 53748661 - 2¹⁷ = 53617589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53718661) 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, 26874330 + 26874331.

It is an arithmetic number, because the mean of its divisors is an integer number (26874331).

Almost surely, 2^53748661 is an apocalyptic number.

It is an amenable number.

53748661 is a deficient number, since it is larger than the sum of its proper divisors (1).

53748661 is an equidigital number, since it uses as much as digits as its factorization.

53748661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 53748661 is about 7331.3478296968. The cubic root of 53748661 is about 377.3889818710.

The spelling of 53748661 in words is "fifty-three million, seven hundred forty-eight thousand, six hundred sixty-one".