154382561 has 2 divisors, whose sum is σ = 154382562. Its totient is φ = 154382560.

The previous prime is 154382533. The next prime is 154382563. The reversal of 154382561 is 165283451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154380625 + 1936 = 12425^2 + 44^2 .

It is a cyclic number.

It is not a de Polignac number, because 154382561 - 2⁶ = 154382497 is a prime.

Together with 154382563, 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 (154382563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77191280 + 77191281.

It is an arithmetic number, because the mean of its divisors is an integer number (77191281).

Almost surely, 2^154382561 is an apocalyptic number.

It is an amenable number.

154382561 is a deficient number, since it is larger than the sum of its proper divisors (1).

154382561 is an equidigital number, since it uses as much as digits as its factorization.

154382561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The square root of 154382561 is about 12425.0779072004. The cubic root of 154382561 is about 536.4543200558.

The spelling of 154382561 in words is "one hundred fifty-four million, three hundred eighty-two thousand, five hundred sixty-one".