55007744 has 40 divisors (see below), whose sum is σ = 119911968. Its totient is φ = 25000960.

The previous prime is 55007723. The next prime is 55007749. The reversal of 55007744 is 44770055.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 55007744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55007749) 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, 749 + ... + 10515.

Almost surely, 2^55007744 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 55007744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59955984).

55007744 is an abundant number, since it is smaller than the sum of its proper divisors (64904224).

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

55007744 is an equidigital number, since it uses as much as digits as its factorization.

55007744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796 (or 9780 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 55007744 is about 7416.7205690925. The cubic root of 55007744 is about 380.3130937621.

Adding to 55007744 its reverse (44770055), we get a palindrome (99777799).

The spelling of 55007744 in words is "fifty-five million, seven thousand, seven hundred forty-four".