5650021 has 8 divisors (see below), whose sum is σ = 6103160. Its totient is φ = 5199552.

The previous prime is 5650013. The next prime is 5650027. The reversal of 5650021 is 1200565.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 748225 + 4901796 = 865^2 + 2214^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5650021 - 2³ = 5650013 is a prime.

It is a Duffinian number.

5650021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5650027) 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, 7615 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (762895).

Almost surely, 2^5650021 is an apocalyptic number.

It is an amenable number.

5650021 is a deficient number, since it is larger than the sum of its proper divisors (453139).

5650021 is a wasteful number, since it uses less digits than its factorization.

5650021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 5650021 is about 2376.9772821800. The cubic root of 5650021 is about 178.1079700965.

Adding to 5650021 its reverse (1200565), we get a palindrome (6850586).

The spelling of 5650021 in words is "five million, six hundred fifty thousand, twenty-one".