55081120 has 24 divisors (see below), whose sum is σ = 130129524. Its totient is φ = 22032384.

The previous prime is 55081099. The next prime is 55081127. The reversal of 55081120 is 2118055.

It can be written as a sum of positive squares in 2 ways, for example, as 50637456 + 4443664 = 7116^2 + 2108^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55081091 and 55081100.

It is not an unprimeable number, because it can be changed into a prime (55081127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171969 + ... + 172288.

Almost surely, 2^55081120 is an apocalyptic number.

It is an amenable number.

55081120 is an abundant number, since it is smaller than the sum of its proper divisors (75048404).

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

55081120 is a wasteful number, since it uses less digits than its factorization.

55081120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344272 (or 344264 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 55081120 is about 7421.6655812560. The cubic root of 55081120 is about 380.4821212035.

Adding to 55081120 its reverse (2118055), we get a palindrome (57199175).

The spelling of 55081120 in words is "fifty-five million, eighty-one thousand, one hundred twenty".