5638554 has 24 divisors (see below), whose sum is σ = 12860640. Its totient is φ = 1780488.

The previous prime is 5638537. The next prime is 5638601. The reversal of 5638554 is 4558365.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

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, 7902 + ... + 8585.

It is an arithmetic number, because the mean of its divisors is an integer number (535860).

Almost surely, 2^5638554 is an apocalyptic number.

5638554 is an abundant number, since it is smaller than the sum of its proper divisors (7222086).

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

5638554 is a wasteful number, since it uses less digits than its factorization.

5638554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16514 (or 16511 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 5638554 is about 2374.5639599724. The cubic root of 5638554 is about 177.9873954800.

The spelling of 5638554 in words is "five million, six hundred thirty-eight thousand, five hundred fifty-four".