553066561 has 2 divisors, whose sum is σ = 553066562. Its totient is φ = 553066560.

The previous prime is 553066541. The next prime is 553066601. The reversal of 553066561 is 165660355.

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., 456634161 + 96432400 = 21369^2 + 9820^2 .

It is a cyclic number.

It is not a de Polignac number, because 553066561 - 2⁵ = 553066529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 553066561.

It is not a weakly prime, because it can be changed into another prime (553066541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276533280 + 276533281.

It is an arithmetic number, because the mean of its divisors is an integer number (276533281).

Almost surely, 2^553066561 is an apocalyptic number.

It is an amenable number.

553066561 is a deficient number, since it is larger than the sum of its proper divisors (1).

553066561 is an equidigital number, since it uses as much as digits as its factorization.

553066561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 553066561 is about 23517.3672208434. The cubic root of 553066561 is about 820.8411757715.

The spelling of 553066561 in words is "five hundred fifty-three million, sixty-six thousand, five hundred sixty-one".