1152340561 has 2 divisors, whose sum is σ = 1152340562. Its totient is φ = 1152340560.

The previous prime is 1152340523. The next prime is 1152340589. The reversal of 1152340561 is 1650432511.

It is an a-pointer prime, because the next prime (1152340589) can be obtained adding 1152340561 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1112889600 + 39450961 = 33360^2 + 6281^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152340561 - 2¹⁹ = 1151816273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1152340061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576170280 + 576170281.

It is an arithmetic number, because the mean of its divisors is an integer number (576170281).

Almost surely, 2^1152340561 is an apocalyptic number.

It is an amenable number.

1152340561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152340561 is an equidigital number, since it uses as much as digits as its factorization.

1152340561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1152340561 is about 33946.1420635689. The cubic root of 1152340561 is about 1048.3998486990.

The spelling of 1152340561 in words is "one billion, one hundred fifty-two million, three hundred forty thousand, five hundred sixty-one".