53489 has 4 divisors (see below), whose sum is σ = 54180. Its totient is φ = 52800.
The previous prime is 53479. The next prime is 53503. The reversal of 53489 is 98435.
53489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98435 = 5 ⋅19687.
It can be written as a sum of positive squares in 2 ways, for example, as 27889 + 25600 = 167^2 + 160^2 .
It is a cyclic number.
It is not a de Polignac number, because 53489 - 28 = 53233 is a prime.
It is a super-2 number, since 2×534892 = 5722146242, which contains 22 as substring.
It is a d-powerful number, because it can be written as 5 + 39 + 45 + 85 + 9 .
It is a Duffinian number.
It is a Curzon number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 53489.
It is not an unprimeable number, because it can be changed into a prime (53419) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 389.
It is an arithmetic number, because the mean of its divisors is an integer number (13545).
253489 is an apocalyptic number.
It is an amenable number.
53489 is a deficient number, since it is larger than the sum of its proper divisors (691).
53489 is an equidigital number, since it uses as much as digits as its factorization.
53489 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 690.
The product of its digits is 4320, while the sum is 29.
The square root of 53489 is about 231.2768903285. The cubic root of 53489 is about 37.6780275682.
The spelling of 53489 in words is "fifty-three thousand, four hundred eighty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.001 sec. • engine limits •