55490344 has 48 divisors (see below), whose sum is σ = 130353300. Its totient is φ = 21950208.

The previous prime is 55490321. The next prime is 55490353. The reversal of 55490344 is 44309455.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42745444 + 12744900 = 6538^2 + 3570^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349 + ... + 10540.

Almost surely, 2^55490344 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 55490344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65176650).

55490344 is an abundant number, since it is smaller than the sum of its proper divisors (74862956).

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

55490344 is a wasteful number, since it uses less digits than its factorization.

55490344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922 (or 10911 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 55490344 is about 7449.1841163983. The cubic root of 55490344 is about 381.4220585381.

Adding to 55490344 its reverse (44309455), we get a palindrome (99799799).

The spelling of 55490344 in words is "fifty-five million, four hundred ninety thousand, three hundred forty-four".