5503644 has 18 divisors (see below), whose sum is σ = 13912080. Its totient is φ = 1834536.

The previous prime is 5503621. The next prime is 5503657. The reversal of 5503644 is 4463055.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76404 + ... + 76475.

Almost surely, 2^5503644 is an apocalyptic number.

It is an amenable number.

5503644 is an abundant number, since it is smaller than the sum of its proper divisors (8408436).

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

5503644 is a wasteful number, since it uses less digits than its factorization.

5503644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152889 (or 152884 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 5503644 is about 2345.9846546813. The cubic root of 5503644 is about 176.5563917640.

Adding to 5503644 its reverse (4463055), we get a palindrome (9966699).

The spelling of 5503644 in words is "five million, five hundred three thousand, six hundred forty-four".