154662161 has 2 divisors, whose sum is σ = 154662162. Its totient is φ = 154662160.

The previous prime is 154662089. The next prime is 154662163. The reversal of 154662161 is 161266451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145323025 + 9339136 = 12055^2 + 3056^2 .

It is an emirp because it is prime and its reverse (161266451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154662161 - 2¹⁰ = 154661137 is a prime.

Together with 154662163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154662163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77331080 + 77331081.

It is an arithmetic number, because the mean of its divisors is an integer number (77331081).

Almost surely, 2^154662161 is an apocalyptic number.

It is an amenable number.

154662161 is a deficient number, since it is larger than the sum of its proper divisors (1).

154662161 is an equidigital number, since it uses as much as digits as its factorization.

154662161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 154662161 is about 12436.3242559850. The cubic root of 154662161 is about 536.7779796023. Note that the first 3 decimals are identical.

The spelling of 154662161 in words is "one hundred fifty-four million, six hundred sixty-two thousand, one hundred sixty-one".