144530217 has 32 divisors (see below), whose sum is σ = 235522560. Its totient is φ = 87039360.

The previous prime is 144530179. The next prime is 144530233. The reversal of 144530217 is 712035441.

144530217 is a `hidden beast` number, since 1 + 445 + 3 + 0 + 217 = 666.

144530217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144530217 - 2²⁴ = 127753001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (144530297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12117 + ... + 20877.

It is an arithmetic number, because the mean of its divisors is an integer number (7360080).

Almost surely, 2^144530217 is an apocalyptic number.

It is an amenable number.

144530217 is a deficient number, since it is larger than the sum of its proper divisors (90992343).

144530217 is a wasteful number, since it uses less digits than its factorization.

144530217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830 (or 8824 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 144530217 is about 12022.0720759776. The cubic root of 144530217 is about 524.7908064509.

Adding to 144530217 its reverse (712035441), we get a palindrome (856565658).

The spelling of 144530217 in words is "one hundred forty-four million, five hundred thirty thousand, two hundred seventeen".