551343161 has 2 divisors, whose sum is σ = 551343162. Its totient is φ = 551343160.

The previous prime is 551343151. The next prime is 551343223. The reversal of 551343161 is 161343155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551310400 + 32761 = 23480^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 551343161 - 2¹⁰ = 551342137 is a prime.

It is not a weakly prime, because it can be changed into another prime (551343131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275671580 + 275671581.

It is an arithmetic number, because the mean of its divisors is an integer number (275671581).

Almost surely, 2^551343161 is an apocalyptic number.

It is an amenable number.

551343161 is a deficient number, since it is larger than the sum of its proper divisors (1).

551343161 is an equidigital number, since it uses as much as digits as its factorization.

551343161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 551343161 is about 23480.6976259224. The cubic root of 551343161 is about 819.9876862121.

The spelling of 551343161 in words is "five hundred fifty-one million, three hundred forty-three thousand, one hundred sixty-one".