551161165249 has 2 divisors, whose sum is σ = 551161165250. Its totient is φ = 551161165248.

The previous prime is 551161165193. The next prime is 551161165259. The reversal of 551161165249 is 942561161155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497790924849 + 53370240400 = 705543^2 + 231020^2 .

It is a cyclic number.

It is not a de Polignac number, because 551161165249 - 2¹⁵ = 551161132481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551161165199 and 551161165208.

It is not a weakly prime, because it can be changed into another prime (551161165259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275580582624 + 275580582625.

It is an arithmetic number, because the mean of its divisors is an integer number (275580582625).

Almost surely, 2^551161165249 is an apocalyptic number.

It is an amenable number.

551161165249 is a deficient number, since it is larger than the sum of its proper divisors (1).

551161165249 is an equidigital number, since it uses as much as digits as its factorization.

551161165249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 46.

The spelling of 551161165249 in words is "five hundred fifty-one billion, one hundred sixty-one million, one hundred sixty-five thousand, two hundred forty-nine".