144221564 has 12 divisors (see below), whose sum is σ = 253287888. Its totient is φ = 71853600.

The previous prime is 144221513. The next prime is 144221599. The reversal of 144221564 is 465122441.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 63032 + ... + 65279.

It is an arithmetic number, because the mean of its divisors is an integer number (21107324).

Almost surely, 2^144221564 is an apocalyptic number.

It is an amenable number.

144221564 is a deficient number, since it is larger than the sum of its proper divisors (109066324).

144221564 is a wasteful number, since it uses less digits than its factorization.

144221564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128596 (or 128594 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 144221564 is about 12009.2282849482. The cubic root of 144221564 is about 524.4169660598.

The spelling of 144221564 in words is "one hundred forty-four million, two hundred twenty-one thousand, five hundred sixty-four".