144573961 has 12 divisors (see below), whose sum is σ = 173978820. Its totient is φ = 119646240.

The previous prime is 144573953. The next prime is 144573971. The reversal of 144573961 is 169375441.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 120012025 = 4956^2 + 10955^2 .

It is not a de Polignac number, because 144573961 - 2³ = 144573953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144573901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49450 + ... + 52291.

It is an arithmetic number, because the mean of its divisors is an integer number (14498235).

Almost surely, 2^144573961 is an apocalyptic number.

It is an amenable number.

144573961 is a deficient number, since it is larger than the sum of its proper divisors (29404859).

144573961 is a wasteful number, since it uses less digits than its factorization.

144573961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101784 (or 101777 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 144573961 is about 12023.8912586567. The cubic root of 144573961 is about 524.8437460919.

The spelling of 144573961 in words is "one hundred forty-four million, five hundred seventy-three thousand, nine hundred sixty-one".