144774545 has 8 divisors (see below), whose sum is σ = 173881320. Its totient is φ = 115718400.

The previous prime is 144774529. The next prime is 144774559. The reversal of 144774545 is 545477441.

It can be written as a sum of positive squares in 4 ways, for example, as 29584 + 144744961 = 172^2 + 12031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144774545 - 2⁴ = 144774529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6050 + ... + 18059.

It is an arithmetic number, because the mean of its divisors is an integer number (21735165).

Almost surely, 2^144774545 is an apocalyptic number.

It is an amenable number.

144774545 is a deficient number, since it is larger than the sum of its proper divisors (29106775).

144774545 is a wasteful number, since it uses less digits than its factorization.

144774545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25315.

The product of its digits is 313600, while the sum is 41.

The square root of 144774545 is about 12032.2294276663. The cubic root of 144774545 is about 525.0863591875.

The spelling of 144774545 in words is "one hundred forty-four million, seven hundred seventy-four thousand, five hundred forty-five".