55283140 has 24 divisors (see below), whose sum is σ = 126649152. Its totient is φ = 20102880.

The previous prime is 55283131. The next prime is 55283147. The reversal of 55283140 is 4138255.

55283140 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 = 55283099 and 55283108.

It is not an unprimeable number, because it can be changed into a prime (55283147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125424 + ... + 125863.

It is an arithmetic number, because the mean of its divisors is an integer number (5277048).

Almost surely, 2^55283140 is an apocalyptic number.

It is an amenable number.

55283140 is an abundant number, since it is smaller than the sum of its proper divisors (71366012).

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

55283140 is a wasteful number, since it uses less digits than its factorization.

55283140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251307 (or 251305 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 55283140 is about 7435.2632771140. The cubic root of 55283140 is about 380.9467160715.

It can be divided in two parts, 5528 and 3140, that added together give a palindrome (8668).

The spelling of 55283140 in words is "fifty-five million, two hundred eighty-three thousand, one hundred forty".