53240 has 32 divisors (see below), whose sum is σ = 131760. Its totient is φ = 19360.

The previous prime is 53239. The next prime is 53267. The reversal of 53240 is 4235.

53240 = 50² + 51² + ... + 65².

It is a plaindrome in base 14.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4835 + ... + 4845.

2⁵³²⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65880).

53240 is an abundant number, since it is smaller than the sum of its proper divisors (78520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53240 is a wasteful number, since it uses less digits than its factorization.

53240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 53240 is about 230.7379465974. The cubic root of 53240 is about 37.6194708269.

Adding to 53240 its reverse (4235), we get a palindrome (57475).

It can be divided in two parts, 53 and 240, that multiplied together give a triangular number (12720 = T₁₅₉).

The spelling of 53240 in words is "fifty-three thousand, two hundred forty".