154211441 has 2 divisors, whose sum is σ = 154211442. Its totient is φ = 154211440.

The previous prime is 154211423. The next prime is 154211443. The reversal of 154211441 is 144112451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93683041 + 60528400 = 9679^2 + 7780^2 .

It is a cyclic number.

It is not a de Polignac number, because 154211441 - 2²² = 150017137 is a prime.

Together with 154211443, 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 (154211443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77105720 + 77105721.

It is an arithmetic number, because the mean of its divisors is an integer number (77105721).

Almost surely, 2^154211441 is an apocalyptic number.

It is an amenable number.

154211441 is a deficient number, since it is larger than the sum of its proper divisors (1).

154211441 is an equidigital number, since it uses as much as digits as its factorization.

154211441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 23.

The square root of 154211441 is about 12418.1899244616. The cubic root of 154211441 is about 536.2560420457.

Adding to 154211441 its reverse (144112451), we get a palindrome (298323892).

The spelling of 154211441 in words is "one hundred fifty-four million, two hundred eleven thousand, four hundred forty-one".