55241440 has 24 divisors (see below), whose sum is σ = 130508280. Its totient is φ = 22096512.

The previous prime is 55241437. The next prime is 55241443. The reversal of 55241440 is 4414255.

It is a happy number.

55241440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55241437) and next prime (55241443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55241443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172470 + ... + 172789.

It is an arithmetic number, because the mean of its divisors is an integer number (5437845).

Almost surely, 2^55241440 is an apocalyptic number.

It is an amenable number.

55241440 is an abundant number, since it is smaller than the sum of its proper divisors (75266840).

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

55241440 is a wasteful number, since it uses less digits than its factorization.

55241440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345274 (or 345266 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 55241440 is about 7432.4585434431. The cubic root of 55241440 is about 380.8509094424.

Adding to 55241440 its reverse (4414255), we get a palindrome (59655695).

The spelling of 55241440 in words is "fifty-five million, two hundred forty-one thousand, four hundred forty".