5515644 has 24 divisors (see below), whose sum is σ = 13285888. Its totient is φ = 1779120.

The previous prime is 5515637. The next prime is 5515649. The reversal of 5515644 is 4465155.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7042 + ... + 7785.

Almost surely, 2^5515644 is an apocalyptic number.

It is an amenable number.

5515644 is an abundant number, since it is smaller than the sum of its proper divisors (7770244).

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

5515644 is a wasteful number, since it uses less digits than its factorization.

5515644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14865 (or 14863 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 5515644 is about 2348.5408235754. The cubic root of 5515644 is about 176.6846182462.

The spelling of 5515644 in words is "five million, five hundred fifteen thousand, six hundred forty-four".