55335240 has 192 divisors, whose sum is σ = 193415040. Its totient is φ = 13685760.

The previous prime is 55335229. The next prime is 55335307. The reversal of 55335240 is 4253355.

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 47 ways as a sum of consecutive naturals, for example, 339399 + ... + 339561.

It is an arithmetic number, because the mean of its divisors is an integer number (1007370).

Almost surely, 2^55335240 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 55335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96707520).

55335240 is an abundant number, since it is smaller than the sum of its proper divisors (138079800).

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

55335240 is a wasteful number, since it uses less digits than its factorization.

55335240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55335240 is about 7438.7660267009. The cubic root of 55335240 is about 381.0663492443.

Adding to 55335240 its reverse (4253355), we get a palindrome (59588595).

The spelling of 55335240 in words is "fifty-five million, three hundred thirty-five thousand, two hundred forty".