65152321 has 16 divisors (see below), whose sum is σ = 72309888. Its totient is φ = 58320000.

The previous prime is 65152309. The next prime is 65152363. The reversal of 65152321 is 12325156.

It is a 6-Lehmer number, since φ(65152321) divides (65152321-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 65152321 - 2⁵ = 65152289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65152391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133540 + ... + 134026.

It is an arithmetic number, because the mean of its divisors is an integer number (4519368).

Almost surely, 2^65152321 is an apocalyptic number.

It is an amenable number.

65152321 is a deficient number, since it is larger than the sum of its proper divisors (7157567).

65152321 is a wasteful number, since it uses less digits than its factorization.

65152321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 1800, while the sum is 25.

The square root of 65152321 is about 8071.6987679174. The cubic root of 65152321 is about 402.3864031369.

Adding to 65152321 its reverse (12325156), we get a palindrome (77477477).

It can be divided in two parts, 6515 and 2321, that added together give a square (8836 = 94²).

The spelling of 65152321 in words is "sixty-five million, one hundred fifty-two thousand, three hundred twenty-one".