65551427 has 4 divisors (see below), whose sum is σ = 66023160. Its totient is φ = 65079696.

The previous prime is 65551379. The next prime is 65551429. The reversal of 65551427 is 72415556.

65551427 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.

It is a cyclic number.

It is not a de Polignac number, because 65551427 - 2¹² = 65547331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65551429) 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, 235658 + ... + 235935.

It is an arithmetic number, because the mean of its divisors is an integer number (16505790).

Almost surely, 2^65551427 is an apocalyptic number.

65551427 is a deficient number, since it is larger than the sum of its proper divisors (471733).

65551427 is a wasteful number, since it uses less digits than its factorization.

65551427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471732.

The product of its digits is 42000, while the sum is 35.

The square root of 65551427 is about 8096.3835753996. The cubic root of 65551427 is about 403.2063689044.

The spelling of 65551427 in words is "sixty-five million, five hundred fifty-one thousand, four hundred twenty-seven".