55552354440 has 256 divisors, whose sum is σ = 185103360000. Its totient is φ = 13225006080.

The previous prime is 55552354433. The next prime is 55552354453. The reversal of 55552354440 is 4445325555.

55552354440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55552354392 and 55552354401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20750382 + ... + 20753058.

It is an arithmetic number, because the mean of its divisors is an integer number (723060000).

Almost surely, 2^55552354440 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 55552354440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92551680000).

55552354440 is an abundant number, since it is smaller than the sum of its proper divisors (129551005560).

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

55552354440 is a wasteful number, since it uses less digits than its factorization.

55552354440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 42.

Adding to 55552354440 its reverse (4445325555), we get a palindrome (59997679995).

The spelling of 55552354440 in words is "fifty-five billion, five hundred fifty-two million, three hundred fifty-four thousand, four hundred forty".