55130140 has 24 divisors (see below), whose sum is σ = 124679520. Its totient is φ = 20355648.

The previous prime is 55130063. The next prime is 55130161. The reversal of 55130140 is 4103155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105760 + ... + 106279.

It is an arithmetic number, because the mean of its divisors is an integer number (5194980).

Almost surely, 2^55130140 is an apocalyptic number.

It is an amenable number.

55130140 is an abundant number, since it is smaller than the sum of its proper divisors (69549380).

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

55130140 is a wasteful number, since it uses less digits than its factorization.

55130140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212061 (or 212059 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55130140 is about 7424.9673399955. The cubic root of 55130140 is about 380.5949590408.

Adding to 55130140 its reverse (4103155), we get a palindrome (59233295).

The spelling of 55130140 in words is "fifty-five million, one hundred thirty thousand, one hundred forty".