5654721 has 4 divisors (see below), whose sum is σ = 7539632. Its totient is φ = 3769812.

The previous prime is 5654717. The next prime is 5654731. The reversal of 5654721 is 1274565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5654721 - 2² = 5654717 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

5654721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5654731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942451 + ... + 942456.

It is an arithmetic number, because the mean of its divisors is an integer number (1884908).

Almost surely, 2^5654721 is an apocalyptic number.

It is an amenable number.

5654721 is a deficient number, since it is larger than the sum of its proper divisors (1884911).

5654721 is a wasteful number, since it uses less digits than its factorization.

5654721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884910.

The product of its digits is 8400, while the sum is 30.

The square root of 5654721 is about 2377.9657272551. The cubic root of 5654721 is about 178.1573430959.

The spelling of 5654721 in words is "five million, six hundred fifty-four thousand, seven hundred twenty-one".