61144 has 8 divisors (see below), whose sum is σ = 114660. Its totient is φ = 30568.

The previous prime is 61141. The next prime is 61151. The reversal of 61144 is 44116.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3814 + ... + 3829.

2⁶¹¹⁴⁴ is an apocalyptic number.

It is an amenable number.

61144 is a deficient number, since it is larger than the sum of its proper divisors (53516).

61144 is a wasteful number, since it uses less digits than its factorization.

61144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649 (or 7645 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 61144 is about 247.2731283419. The cubic root of 61144 is about 39.3959232041.

The spelling of 61144 in words is "sixty-one thousand, one hundred forty-four".