254552161 has 2 divisors, whose sum is σ = 254552162. Its totient is φ = 254552160.

The previous prime is 254552159. The next prime is 254552209. The reversal of 254552161 is 161255452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254243025 + 309136 = 15945^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 254552161 - 2¹ = 254552159 is a prime.

Together with 254552159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (254552261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127276080 + 127276081.

It is an arithmetic number, because the mean of its divisors is an integer number (127276081).

Almost surely, 2^254552161 is an apocalyptic number.

It is an amenable number.

254552161 is a deficient number, since it is larger than the sum of its proper divisors (1).

254552161 is an equidigital number, since it uses as much as digits as its factorization.

254552161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 31.

The square root of 254552161 is about 15954.6908776071. The cubic root of 254552161 is about 633.7611251673.

The spelling of 254552161 in words is "two hundred fifty-four million, five hundred fifty-two thousand, one hundred sixty-one".