65551441 has 4 divisors (see below), whose sum is σ = 65592432. Its totient is φ = 65510452.

The previous prime is 65551433. The next prime is 65551459. The reversal of 65551441 is 14415556.

65551441 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 65551441 - 2³ = 65551433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65551741) 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, 17995 + ... + 21328.

It is an arithmetic number, because the mean of its divisors is an integer number (16398108).

Almost surely, 2^65551441 is an apocalyptic number.

It is an amenable number.

65551441 is a deficient number, since it is larger than the sum of its proper divisors (40991).

65551441 is a wasteful number, since it uses less digits than its factorization.

65551441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40990.

The product of its digits is 12000, while the sum is 31.

The square root of 65551441 is about 8096.3844399831. The cubic root of 65551441 is about 403.2063976090.

Adding to 65551441 its reverse (14415556), we get a palindrome (79966997).

The spelling of 65551441 in words is "sixty-five million, five hundred fifty-one thousand, four hundred forty-one".