65053021 has 4 divisors (see below), whose sum is σ = 70966944. Its totient is φ = 59139100.

The previous prime is 65052971. The next prime is 65053031. The reversal of 65053021 is 12035056.

It is a happy number.

65053021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65053021 - 2⁹ = 65052509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65052983 and 65053001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65053031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2956945 + ... + 2956966.

It is an arithmetic number, because the mean of its divisors is an integer number (17741736).

Almost surely, 2^65053021 is an apocalyptic number.

It is an amenable number.

65053021 is a deficient number, since it is larger than the sum of its proper divisors (5913923).

65053021 is a wasteful number, since it uses less digits than its factorization.

65053021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913922.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 65053021 is about 8065.5453008461. The cubic root of 65053021 is about 402.1818707111.

Adding to 65053021 its reverse (12035056), we get a palindrome (77088077).

The spelling of 65053021 in words is "sixty-five million, fifty-three thousand, twenty-one".