551113181 has 2 divisors, whose sum is σ = 551113182. Its totient is φ = 551113180.

The previous prime is 551113153. The next prime is 551113219. The reversal of 551113181 is 181311155.

551113181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468029956 + 83083225 = 21634^2 + 9115^2 .

It is a cyclic number.

It is not a de Polignac number, because 551113181 - 2¹⁴ = 551096797 is a prime.

It is a super-2 number, since 2×551113181² = 607451476543877522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551113181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551113141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275556590 + 275556591.

It is an arithmetic number, because the mean of its divisors is an integer number (275556591).

Almost surely, 2^551113181 is an apocalyptic number.

It is an amenable number.

551113181 is a deficient number, since it is larger than the sum of its proper divisors (1).

551113181 is an equidigital number, since it uses as much as digits as its factorization.

551113181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 26.

The square root of 551113181 is about 23475.7999011748. The cubic root of 551113181 is about 819.8736574134.

The spelling of 551113181 in words is "five hundred fifty-one million, one hundred thirteen thousand, one hundred eighty-one".