154545445 has 4 divisors (see below), whose sum is σ = 185454540. Its totient is φ = 123636352.

The previous prime is 154545431. The next prime is 154545491. The reversal of 154545445 is 544545451.

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 71115489 + 83429956 = 8433^2 + 9134^2 .

It is a cyclic number.

It is not a de Polignac number, because 154545445 - 2¹⁷ = 154414373 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 15 and 4545445 contains 154545445 itself.

It is a congruent 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, 15454540 + ... + 15454549.

It is an arithmetic number, because the mean of its divisors is an integer number (46363635).

Almost surely, 2^154545445 is an apocalyptic number.

It is an amenable number.

154545445 is a deficient number, since it is larger than the sum of its proper divisors (30909095).

154545445 is an equidigital number, since it uses as much as digits as its factorization.

154545445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30909094.

The product of its digits is 160000, while the sum is 37.

The square root of 154545445 is about 12431.6308262432. The cubic root of 154545445 is about 536.6429188897.

The spelling of 154545445 in words is "one hundred fifty-four million, five hundred forty-five thousand, four hundred forty-five".