657552073 has 2 divisors, whose sum is σ = 657552074. Its totient is φ = 657552072.

The previous prime is 657552047. The next prime is 657552089. The reversal of 657552073 is 370255756.

657552073 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., 632421904 + 25130169 = 25148^2 + 5013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-657552073 is a prime.

It is not a weakly prime, because it can be changed into another prime (657552373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328776036 + 328776037.

It is an arithmetic number, because the mean of its divisors is an integer number (328776037).

Almost surely, 2^657552073 is an apocalyptic number.

It is an amenable number.

657552073 is a deficient number, since it is larger than the sum of its proper divisors (1).

657552073 is an equidigital number, since it uses as much as digits as its factorization.

657552073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 220500, while the sum is 40.

The square root of 657552073 is about 25642.7781841204. The cubic root of 657552073 is about 869.5810168213.

The spelling of 657552073 in words is "six hundred fifty-seven million, five hundred fifty-two thousand, seventy-three".