5661554543 has 2 divisors, whose sum is σ = 5661554544. Its totient is φ = 5661554542.

The previous prime is 5661554497. The next prime is 5661554579. The reversal of 5661554543 is 3454551665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661554543 - 2²⁶ = 5594445679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5661554494 and 5661554503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661553543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830777271 + 2830777272.

It is an arithmetic number, because the mean of its divisors is an integer number (2830777272).

Almost surely, 2^5661554543 is an apocalyptic number.

5661554543 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661554543 is an equidigital number, since it uses as much as digits as its factorization.

5661554543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080000, while the sum is 44.

The square root of 5661554543 is about 75243.3023132292. The cubic root of 5661554543 is about 1782.2907995546.

The spelling of 5661554543 in words is "five billion, six hundred sixty-one million, five hundred fifty-four thousand, five hundred forty-three".