550252402181 has 2 divisors, whose sum is σ = 550252402182. Its totient is φ = 550252402180.

The previous prime is 550252402157. The next prime is 550252402223. The reversal of 550252402181 is 181204252055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425311361281 + 124941040900 = 652159^2 + 353470^2 .

It is a cyclic number.

It is not a de Polignac number, because 550252402181 - 2¹⁸ = 550252140037 is a prime.

It is a super-2 number, since 2×550252402181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550252402481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275126201090 + 275126201091.

It is an arithmetic number, because the mean of its divisors is an integer number (275126201091).

Almost surely, 2^550252402181 is an apocalyptic number.

It is an amenable number.

550252402181 is a deficient number, since it is larger than the sum of its proper divisors (1).

550252402181 is an equidigital number, since it uses as much as digits as its factorization.

550252402181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32000, while the sum is 35.

The spelling of 550252402181 in words is "five hundred fifty billion, two hundred fifty-two million, four hundred two thousand, one hundred eighty-one".