65552149 has 16 divisors (see below), whose sum is σ = 72802800. Its totient is φ = 58646016.

The previous prime is 65552143. The next prime is 65552161. The reversal of 65552149 is 94125556.

It can be written as a sum of positive squares in 8 ways, for example, as 4431025 + 61121124 = 2105^2 + 7818^2 .

It is not a de Polignac number, because 65552149 - 2³ = 65552141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65552141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60787 + ... + 61855.

It is an arithmetic number, because the mean of its divisors is an integer number (4550175).

Almost surely, 2^65552149 is an apocalyptic number.

It is an amenable number.

65552149 is a deficient number, since it is larger than the sum of its proper divisors (7250651).

65552149 is a wasteful number, since it uses less digits than its factorization.

65552149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its digits is 54000, while the sum is 37.

The square root of 65552149 is about 8096.4281630853. The cubic root of 65552149 is about 403.2078492379.

The spelling of 65552149 in words is "sixty-five million, five hundred fifty-two thousand, one hundred forty-nine".