154485589 has 2 divisors, whose sum is σ = 154485590. Its totient is φ = 154485588.

The previous prime is 154485587. The next prime is 154485607. The reversal of 154485589 is 985584451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145395364 + 9090225 = 12058^2 + 3015^2 .

It is a cyclic number.

It is not a de Polignac number, because 154485589 - 2¹ = 154485587 is a prime.

Together with 154485587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154485587) 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, 77242794 + 77242795.

It is an arithmetic number, because the mean of its divisors is an integer number (77242795).

Almost surely, 2^154485589 is an apocalyptic number.

It is an amenable number.

154485589 is a deficient number, since it is larger than the sum of its proper divisors (1).

154485589 is an equidigital number, since it uses as much as digits as its factorization.

154485589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152000, while the sum is 49.

The square root of 154485589 is about 12429.2231857023. The cubic root of 154485589 is about 536.5736287070.

The spelling of 154485589 in words is "one hundred fifty-four million, four hundred eighty-five thousand, five hundred eighty-nine".