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53481 = 317827

53481 has 4 divisors (see below), whose sum is σ = 71312. Its totient is φ = 35652.

The previous prime is 53479. The next prime is 53503. The reversal of 53481 is 18435.

53481 is digitally balanced in base 2 and base 4, because in such bases 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53481 - 21 = 53479 is a prime.

It is a super-2 number, since 2×534812 = 5720434722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5 + 39 + 45 + 85 + 1 .

It is a D-number.

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 53481.

It is not an unprimeable number, because it can be changed into a prime (53401) 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, 8911 + ... + 8916.

It is an arithmetic number, because the mean of its divisors is an integer number (17828).

253481 is an apocalyptic number.

It is an amenable number.

53481 is a deficient number, since it is larger than the sum of its proper divisors (17831).

53481 is a wasteful number, since it uses less digits than its factorization.

53481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830.

The product of its digits is 480, while the sum is 21.

The square root of 53481 is about 231.2595943956. The cubic root of 53481 is about 37.6761490558.

It can be divided in two parts, 5 and 3481, that added together give a triangular number (3486 = T83).

The spelling of 53481 in words is "fifty-three thousand, four hundred eighty-one".

Divisors: 1 3 17827 53481