5650721 has 4 divisors (see below), whose sum is σ = 5685552. Its totient is φ = 5615892.

The previous prime is 5650703. The next prime is 5650741. The reversal of 5650721 is 1270565.

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 a cyclic number.

It is not a de Polignac number, because 5650721 - 2¹⁴ = 5634337 is a prime.

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 (5650741) 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, 17171 + ... + 17496.

It is an arithmetic number, because the mean of its divisors is an integer number (1421388).

Almost surely, 2^5650721 is an apocalyptic number.

It is an amenable number.

5650721 is a deficient number, since it is larger than the sum of its proper divisors (34831).

5650721 is a wasteful number, since it uses less digits than its factorization.

5650721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34830.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 5650721 is about 2377.1245234527. The cubic root of 5650721 is about 178.1153252568.

The spelling of 5650721 in words is "five million, six hundred fifty thousand, seven hundred twenty-one".