55340865 has 24 divisors (see below), whose sum is σ = 101568168. Its totient is φ = 27778560.

The previous prime is 55340849. The next prime is 55340881. The reversal of 55340865 is 56804355.

55340865 is a `hidden beast` number, since 553 + 40 + 8 + 65 = 666.

55340865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55340849) and next prime (55340881).

It can be written as a sum of positive squares in 4 ways, for example, as 22439169 + 32901696 = 4737^2 + 5736^2 .

It is not a de Polignac number, because 55340865 - 2⁴ = 55340849 is a prime.

It is a super-2 number, since 2×55340865² = 6125222677896450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 35406 + ... + 36935.

It is an arithmetic number, because the mean of its divisors is an integer number (4232007).

Almost surely, 2^55340865 is an apocalyptic number.

It is an amenable number.

55340865 is a deficient number, since it is larger than the sum of its proper divisors (46227303).

55340865 is a wasteful number, since it uses less digits than its factorization.

55340865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72369 (or 72366 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 55340865 is about 7439.1441039948. The cubic root of 55340865 is about 381.0792610018.

The spelling of 55340865 in words is "fifty-five million, three hundred forty thousand, eight hundred sixty-five".