65214521 has 8 divisors (see below), whose sum is σ = 66873600. Its totient is φ = 63566848.

The previous prime is 65214497. The next prime is 65214547. The reversal of 65214521 is 12541256.

65214521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65214521 - 2¹⁰ = 65213497 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65214571) 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 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 14778.

It is an arithmetic number, because the mean of its divisors is an integer number (8359200).

Almost surely, 2^65214521 is an apocalyptic number.

It is an amenable number.

65214521 is a deficient number, since it is larger than the sum of its proper divisors (1659079).

65214521 is a wasteful number, since it uses less digits than its factorization.

65214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703.

The product of its digits is 2400, while the sum is 26.

The square root of 65214521 is about 8075.5508171270. The cubic root of 65214521 is about 402.5144132796.

Adding to 65214521 its reverse (12541256), we get a palindrome (77755777).

The spelling of 65214521 in words is "sixty-five million, two hundred fourteen thousand, five hundred twenty-one".