5550503561 has 2 divisors, whose sum is σ = 5550503562. Its totient is φ = 5550503560.

The previous prime is 5550503551. The next prime is 5550503663. The reversal of 5550503561 is 1653050555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2860110400 + 2690393161 = 53480^2 + 51869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5550503561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5550503501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775251780 + 2775251781.

It is an arithmetic number, because the mean of its divisors is an integer number (2775251781).

Almost surely, 2^5550503561 is an apocalyptic number.

It is an amenable number.

5550503561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550503561 is an equidigital number, since it uses as much as digits as its factorization.

5550503561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56250, while the sum is 35.

The square root of 5550503561 is about 74501.7017322423. The cubic root of 5550503561 is about 1770.5605979603.

The spelling of 5550503561 in words is "five billion, five hundred fifty million, five hundred three thousand, five hundred sixty-one".