55108864 has 36 divisors (see below), whose sum is σ = 111837460. Its totient is φ = 27095040.

The previous prime is 55108861. The next prime is 55108931. The reversal of 55108864 is 46880155.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 51840000 = 1808^2 + 7200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55108861) 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, 13852 + ... + 17380.

Almost surely, 2^55108864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55108864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55918730).

55108864 is an abundant number, since it is smaller than the sum of its proper divisors (56728596).

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

55108864 is an equidigital number, since it uses as much as digits as its factorization.

55108864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 55108864 is about 7423.5344681627. The cubic root of 55108864 is about 380.5459925997.

The spelling of 55108864 in words is "fifty-five million, one hundred eight thousand, eight hundred sixty-four".