154449545 has 4 divisors (see below), whose sum is σ = 185339460. Its totient is φ = 123559632.

The previous prime is 154449527. The next prime is 154449557. The reversal of 154449545 is 545944451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114746944 + 39702601 = 10712^2 + 6301^2 .

It is a cyclic number.

It is not a de Polignac number, because 154449545 - 2⁶ = 154449481 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15444950 + ... + 15444959.

It is an arithmetic number, because the mean of its divisors is an integer number (46334865).

Almost surely, 2^154449545 is an apocalyptic number.

It is an amenable number.

154449545 is a deficient number, since it is larger than the sum of its proper divisors (30889915).

154449545 is an equidigital number, since it uses as much as digits as its factorization.

154449545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30889914.

The product of its digits is 288000, while the sum is 41.

The square root of 154449545 is about 12427.7731311768. The cubic root of 154449545 is about 536.5318950102.

The spelling of 154449545 in words is "one hundred fifty-four million, four hundred forty-nine thousand, five hundred forty-five".