55865969 has 4 divisors (see below), whose sum is σ = 56098020. Its totient is φ = 55633920.

The previous prime is 55865941. The next prime is 55865981. The reversal of 55865969 is 96956855.

55865969 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 an emirpimes, since its reverse is a distinct semiprime: 96956855 = 5 ⋅19391371.

It can be written as a sum of positive squares in 2 ways, for example, as 44890000 + 10975969 = 6700^2 + 3313^2 .

It is a cyclic number.

It is not a de Polignac number, because 55865969 - 2⁸ = 55865713 is a prime.

It is a super-2 number, since 2×55865969² = 6242012984617922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55865969.

It is not an unprimeable number, because it can be changed into a prime (55865989) 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, 115664 + ... + 116145.

It is an arithmetic number, because the mean of its divisors is an integer number (14024505).

Almost surely, 2^55865969 is an apocalyptic number.

It is an amenable number.

55865969 is a deficient number, since it is larger than the sum of its proper divisors (232051).

55865969 is a wasteful number, since it uses less digits than its factorization.

55865969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232050.

The product of its digits is 2916000, while the sum is 53.

The square root of 55865969 is about 7474.3540858057. The cubic root of 55865969 is about 382.2807640517.

The spelling of 55865969 in words is "fifty-five million, eight hundred sixty-five thousand, nine hundred sixty-nine".