5551787273 has 2 divisors, whose sum is σ = 5551787274. Its totient is φ = 5551787272.

The previous prime is 5551787243. The next prime is 5551787323. The reversal of 5551787273 is 3727871555.

It is an a-pointer prime, because the next prime (5551787323) can be obtained adding 5551787273 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5503859344 + 47927929 = 74188^2 + 6923^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551787273 - 2²⁴ = 5535010057 is a prime.

It is not a weakly prime, because it can be changed into another prime (5551787243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775893636 + 2775893637.

It is an arithmetic number, because the mean of its divisors is an integer number (2775893637).

Almost surely, 2^5551787273 is an apocalyptic number.

It is an amenable number.

5551787273 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551787273 is an equidigital number, since it uses as much as digits as its factorization.

5551787273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2058000, while the sum is 50.

The square root of 5551787273 is about 74510.3165541524. The cubic root of 5551787273 is about 1770.6970849571.

The spelling of 5551787273 in words is "five billion, five hundred fifty-one million, seven hundred eighty-seven thousand, two hundred seventy-three".