144559961 has 16 divisors (see below), whose sum is σ = 187286400. Its totient is φ = 108355968.

The previous prime is 144559951. The next prime is 144559963. The reversal of 144559961 is 169955441.

It is a de Polignac number, because none of the positive numbers 2^k-144559961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144559963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40076 + ... + 43533.

It is an arithmetic number, because the mean of its divisors is an integer number (11705400).

Almost surely, 2^144559961 is an apocalyptic number.

It is an amenable number.

144559961 is a deficient number, since it is larger than the sum of its proper divisors (42726439).

144559961 is a wasteful number, since it uses less digits than its factorization.

144559961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83648.

The product of its digits is 194400, while the sum is 44.

The square root of 144559961 is about 12023.3090703017. The cubic root of 144559961 is about 524.8268042452.

The spelling of 144559961 in words is "one hundred forty-four million, five hundred fifty-nine thousand, nine hundred sixty-one".