1124455561 has 2 divisors, whose sum is σ = 1124455562. Its totient is φ = 1124455560.

The previous prime is 1124455559. The next prime is 1124455583. The reversal of 1124455561 is 1655544211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773118025 + 351337536 = 27805^2 + 18744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124455561 - 2¹ = 1124455559 is a prime.

Together with 1124455559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1124458561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562227780 + 562227781.

It is an arithmetic number, because the mean of its divisors is an integer number (562227781).

Almost surely, 2^1124455561 is an apocalyptic number.

It is an amenable number.

1124455561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124455561 is an equidigital number, since it uses as much as digits as its factorization.

1124455561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 34.

The square root of 1124455561 is about 33532.9026629071. The cubic root of 1124455561 is about 1039.8741098235.

Adding to 1124455561 its reverse (1655544211), we get a palindrome (2779999772).

The spelling of 1124455561 in words is "one billion, one hundred twenty-four million, four hundred fifty-five thousand, five hundred sixty-one".