550196981 has 2 divisors, whose sum is σ = 550196982. Its totient is φ = 550196980.

The previous prime is 550196951. The next prime is 550196989. The reversal of 550196981 is 189691055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317908900 + 232288081 = 17830^2 + 15241^2 .

It is a cyclic number.

It is not a de Polignac number, because 550196981 - 2¹⁴ = 550180597 is a prime.

It is a super-2 number, since 2×550196981² = 605433435803028722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550196989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275098490 + 275098491.

It is an arithmetic number, because the mean of its divisors is an integer number (275098491).

Almost surely, 2^550196981 is an apocalyptic number.

It is an amenable number.

550196981 is a deficient number, since it is larger than the sum of its proper divisors (1).

550196981 is an equidigital number, since it uses as much as digits as its factorization.

550196981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 550196981 is about 23456.2780721921. The cubic root of 550196981 is about 819.4190714854.

The spelling of 550196981 in words is "five hundred fifty million, one hundred ninety-six thousand, nine hundred eighty-one".