55341440 has 128 divisors (see below), whose sum is σ = 165093120. Its totient is φ = 17233920.

The previous prime is 55341439. The next prime is 55341467. The reversal of 55341440 is 4414355.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48719 + ... + 49841.

It is an arithmetic number, because the mean of its divisors is an integer number (1289790).

Almost surely, 2^55341440 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 55341440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82546560).

55341440 is an abundant number, since it is smaller than the sum of its proper divisors (109751680).

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

55341440 is a wasteful number, since it uses less digits than its factorization.

55341440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 55341440 is about 7439.1827508134. The cubic root of 55341440 is about 381.0805808210.

Adding to 55341440 its reverse (4414355), we get a palindrome (59755795).

The spelling of 55341440 in words is "fifty-five million, three hundred forty-one thousand, four hundred forty".