1148800561 has 2 divisors, whose sum is σ = 1148800562. Its totient is φ = 1148800560.

The previous prime is 1148800547. The next prime is 1148800567. The reversal of 1148800561 is 1650088411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1139467536 + 9333025 = 33756^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148800561 - 2⁹ = 1148800049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1148800567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574400280 + 574400281.

It is an arithmetic number, because the mean of its divisors is an integer number (574400281).

Almost surely, 2^1148800561 is an apocalyptic number.

It is an amenable number.

1148800561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148800561 is an equidigital number, since it uses as much as digits as its factorization.

1148800561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1148800561 is about 33893.9605387154. The cubic root of 1148800561 is about 1047.3251830699.

Adding to 1148800561 its reverse (1650088411), we get a palindrome (2798888972).

The spelling of 1148800561 in words is "one billion, one hundred forty-eight million, eight hundred thousand, five hundred sixty-one".