61444 has 6 divisors (see below), whose sum is σ = 107534. Its totient is φ = 30720.

The previous prime is 61441. The next prime is 61463. The reversal of 61444 is 44416.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 3844 = 240^2 + 62^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7677 + ... + 7684.

2⁶¹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

61444 is a deficient number, since it is larger than the sum of its proper divisors (46090).

61444 is a wasteful number, since it uses less digits than its factorization.

61444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15365 (or 15363 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 61444 is about 247.8790027413. The cubic root of 61444 is about 39.4602494943.

Subtracting from 61444 its sum of digits (19), we obtain a triangular number (61425 = T₃₅₀).

It can be divided in two parts, 61 and 444, that added together give a palindrome (505).

The spelling of 61444 in words is "sixty-one thousand, four hundred forty-four".