55108740 has 48 divisors (see below), whose sum is σ = 162429120. Its totient is φ = 13921920.

The previous prime is 55108733. The next prime is 55108751. The reversal of 55108740 is 4780155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55108698 and 55108707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23031 + ... + 25310.

It is an arithmetic number, because the mean of its divisors is an integer number (3383940).

Almost surely, 2^55108740 is an apocalyptic number.

It is an amenable number.

55108740 is an abundant number, since it is smaller than the sum of its proper divisors (107320380).

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

55108740 is a wasteful number, since it uses less digits than its factorization.

55108740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48372 (or 48370 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55108740 is about 7423.5261163412. The cubic root of 55108740 is about 380.5457071784.

Adding to 55108740 its reverse (4780155), we get a palindrome (59888895).

The spelling of 55108740 in words is "fifty-five million, one hundred eight thousand, seven hundred forty".