154473145 has 4 divisors (see below), whose sum is σ = 185367780. Its totient is φ = 123578512.

The previous prime is 154473139. The next prime is 154473233. The reversal of 154473145 is 541374451.

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 99520576 + 54952569 = 9976^2 + 7413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154473145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154473145.

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, 15447310 + ... + 15447319.

It is an arithmetic number, because the mean of its divisors is an integer number (46341945).

Almost surely, 2^154473145 is an apocalyptic number.

It is an amenable number.

154473145 is a deficient number, since it is larger than the sum of its proper divisors (30894635).

154473145 is an equidigital number, since it uses as much as digits as its factorization.

154473145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30894634.

The product of its digits is 33600, while the sum is 34.

The square root of 154473145 is about 12428.7225811827. The cubic root of 154473145 is about 536.5592211031.

The spelling of 154473145 in words is "one hundred fifty-four million, four hundred seventy-three thousand, one hundred forty-five".