55438110 has 144 divisors (see below), whose sum is σ = 180756576. Its totient is φ = 11684736.

The previous prime is 55438063. The next prime is 55438121. The reversal of 55438110 is 1183455.

55438110 is a `hidden beast` number, since 5 + 543 + 8 + 110 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56847 + ... + 57813.

It is an arithmetic number, because the mean of its divisors is an integer number (1255254).

Almost surely, 2^55438110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55438110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90378288).

55438110 is an abundant number, since it is smaller than the sum of its proper divisors (125318466).

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

55438110 is a wasteful number, since it uses less digits than its factorization.

55438110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 55438110 is about 7445.6772693960. The cubic root of 55438110 is about 381.3023412864.

The spelling of 55438110 in words is "fifty-five million, four hundred thirty-eight thousand, one hundred ten".