5610721 has 8 divisors (see below), whose sum is σ = 5823488. Its totient is φ = 5400000.

The previous prime is 5610677. The next prime is 5610743. The reversal of 5610721 is 1270165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(5610721) divides (5610721-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 5610721 - 2⁷ = 5610593 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5610692 and 5610701.

It is not an unprimeable number, because it can be changed into a prime (5610821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7096 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (727936).

Almost surely, 2^5610721 is an apocalyptic number.

It is an amenable number.

5610721 is a deficient number, since it is larger than the sum of its proper divisors (212767).

5610721 is a wasteful number, since it uses less digits than its factorization.

5610721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 5610721 is about 2368.6960547947. The cubic root of 5610721 is about 177.6940521404.

Adding to 5610721 its reverse (1270165), we get a palindrome (6880886).

The spelling of 5610721 in words is "five million, six hundred ten thousand, seven hundred twenty-one".