5544721 has 24 divisors (see below), whose sum is σ = 7085760. Its totient is φ = 4245696.

The previous prime is 5544689. The next prime is 5544743. The reversal of 5544721 is 1274455.

5544721 = T₄₉ + T₅₀ + ... + T₃₂₁.

It is not a de Polignac number, because 5544721 - 2⁵ = 5544689 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5544721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5544221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50815 + ... + 50923.

It is an arithmetic number, because the mean of its divisors is an integer number (295240).

Almost surely, 2^5544721 is an apocalyptic number.

5544721 is the 1360-th hex number.

It is an amenable number.

5544721 is a deficient number, since it is larger than the sum of its proper divisors (1541039).

5544721 is a wasteful number, since it uses less digits than its factorization.

5544721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 172 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 5544721 is about 2354.7231259747. The cubic root of 5544721 is about 176.9945522704.

The spelling of 5544721 in words is "five million, five hundred forty-four thousand, seven hundred twenty-one".