5503225644 has 144 divisors (see below), whose sum is σ = 16509068800. Its totient is φ = 1552991616.

The previous prime is 5503225633. The next prime is 5503225657. The reversal of 5503225644 is 4465223055.

5503225644 is a `hidden beast` number, since 5 + 5 + 0 + 3 + 2 + 2 + 5 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5503225599 and 5503225608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5987817 + ... + 5988735.

Almost surely, 2^5503225644 is an apocalyptic number.

5503225644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5503225644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8254534400).

5503225644 is an abundant number, since it is smaller than the sum of its proper divisors (11005843156).

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

5503225644 is a wasteful number, since it uses less digits than its factorization.

5503225644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The square root of 5503225644 is about 74183.7289707116. The cubic root of 5503225644 is about 1765.5191804339.

Adding to 5503225644 its reverse (4465223055), we get a palindrome (9968448699).

The spelling of 5503225644 in words is "five billion, five hundred three million, two hundred twenty-five thousand, six hundred forty-four".