144444537 has 24 divisors (see below), whose sum is σ = 211181256. Its totient is φ = 95133696.

The previous prime is 144444499. The next prime is 144444539. The reversal of 144444537 is 735444441.

It can be written as a sum of positive squares in 4 ways, for example, as 70157376 + 74287161 = 8376^2 + 8619^2 .

It is not a de Polignac number, because 144444537 - 2⁶ = 144444473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144444539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455503 + ... + 455819.

It is an arithmetic number, because the mean of its divisors is an integer number (8799219).

Almost surely, 2^144444537 is an apocalyptic number.

It is an amenable number.

144444537 is a deficient number, since it is larger than the sum of its proper divisors (66736719).

144444537 is a wasteful number, since it uses less digits than its factorization.

144444537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 774 counting only the distinct ones).

The product of its digits is 107520, while the sum is 36.

The square root of 144444537 is about 12018.5081020899. The cubic root of 144444537 is about 524.6870842782.

Adding to 144444537 its reverse (735444441), we get a palindrome (879888978).

It can be divided in two parts, 14444 and 4537, that added together give a palindrome (18981).

The spelling of 144444537 in words is "one hundred forty-four million, four hundred forty-four thousand, five hundred thirty-seven".