65552589 has 12 divisors (see below), whose sum is σ = 95212572. Its totient is φ = 43459200.

The previous prime is 65552581. The next prime is 65552593. The reversal of 65552589 is 98525556.

65552589 is a `hidden beast` number, since 65 + 5 + 5 + 2 + 589 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2350089 + 63202500 = 1533^2 + 7950^2 .

It is not a de Polignac number, because 65552589 - 2³ = 65552581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65552581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18492 + ... + 21749.

It is an arithmetic number, because the mean of its divisors is an integer number (7934381).

Almost surely, 2^65552589 is an apocalyptic number.

It is an amenable number.

65552589 is a deficient number, since it is larger than the sum of its proper divisors (29659983).

65552589 is a wasteful number, since it uses less digits than its factorization.

65552589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40428 (or 40425 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 65552589 is about 8096.4553355157. The cubic root of 65552589 is about 403.2087513749.

The spelling of 65552589 in words is "sixty-five million, five hundred fifty-two thousand, five hundred eighty-nine".