5654321 has 4 divisors (see below), whose sum is σ = 5683812. Its totient is φ = 5624832.

The previous prime is 5654309. The next prime is 5654323. The reversal of 5654321 is 1234565.

5654321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1234565 = 5 ⋅246913.

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 3013696 = 1625^2 + 1736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5654321 is a prime.

It is an Ulam number.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5654323) 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 3 ways as a sum of consecutive naturals, for example, 14456 + ... + 14841.

It is an arithmetic number, because the mean of its divisors is an integer number (1420953).

Almost surely, 2^5654321 is an apocalyptic number.

It is an amenable number.

5654321 is a deficient number, since it is larger than the sum of its proper divisors (29491).

5654321 is a wasteful number, since it uses less digits than its factorization.

5654321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29490.

The product of its digits is 3600, while the sum is 26.

The square root of 5654321 is about 2377.8816202662. The cubic root of 5654321 is about 178.1531422038.

Adding to 5654321 its reverse (1234565), we get a palindrome (6888886).

The spelling of 5654321 in words is "five million, six hundred fifty-four thousand, three hundred twenty-one".