1124555681 has 2 divisors, whose sum is σ = 1124555682. Its totient is φ = 1124555680.

The previous prime is 1124555669. The next prime is 1124555683. The reversal of 1124555681 is 1865554211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079451025 + 45104656 = 32855^2 + 6716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124555681 - 2⁶ = 1124555617 is a prime.

It is a super-2 number, since 2×1124555681² = 2529250959338747522, which contains 22 as substring.

Together with 1124555683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1124555683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562277840 + 562277841.

It is an arithmetic number, because the mean of its divisors is an integer number (562277841).

Almost surely, 2^1124555681 is an apocalyptic number.

It is an amenable number.

1124555681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124555681 is an equidigital number, since it uses as much as digits as its factorization.

1124555681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 38.

The square root of 1124555681 is about 33534.3954917932. The cubic root of 1124555681 is about 1039.9049719016.

The spelling of 1124555681 in words is "one billion, one hundred twenty-four million, five hundred fifty-five thousand, six hundred eighty-one".