55523442140 has 48 divisors (see below), whose sum is σ = 118015071552. Its totient is φ = 21940525056.

The previous prime is 55523442133. The next prime is 55523442179. The reversal of 55523442140 is 4124432555.

It is a self number, because there is not a number n which added to its sum of digits gives 55523442140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054889 + ... + 1106271.

It is an arithmetic number, because the mean of its divisors is an integer number (2458647324).

Almost surely, 2^55523442140 is an apocalyptic number.

It is an amenable number.

55523442140 is an abundant number, since it is smaller than the sum of its proper divisors (62491629412).

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

55523442140 is a wasteful number, since it uses less digits than its factorization.

55523442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52046 (or 52044 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 55523442140 its reverse (4124432555), we get a palindrome (59647874695).

The spelling of 55523442140 in words is "fifty-five billion, five hundred twenty-three million, four hundred forty-two thousand, one hundred forty".