144761 has 6 divisors (see below), whose sum is σ = 153162. Its totient is φ = 136800.

The previous prime is 144757. The next prime is 144763. The reversal of 144761 is 167441.

It can be written as a sum of positive squares in only one way, i.e., 144400 + 361 = 380^2 + 19^2 .

It is not a de Polignac number, because 144761 - 2² = 144757 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144761.

It is not an unprimeable number, because it can be changed into a prime (144763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161 + ... + 561.

It is an arithmetic number, because the mean of its divisors is an integer number (25527).

2¹⁴⁴⁷⁶¹ is an apocalyptic number.

It is an amenable number.

144761 is a deficient number, since it is larger than the sum of its proper divisors (8401).

144761 is an equidigital number, since it uses as much as digits as its factorization.

144761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 420 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 144761 is about 380.4747034955. The cubic root of 144761 is about 52.5069983112.

The spelling of 144761 in words is "one hundred forty-four thousand, seven hundred sixty-one".