55765393 has 4 divisors (see below), whose sum is σ = 56009140. Its totient is φ = 55521648.

The previous prime is 55765343. The next prime is 55765403. The reversal of 55765393 is 39356755.

55765393 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: 39356755 = 5 ⋅7871351.

It can be written as a sum of positive squares in 2 ways, for example, as 23309584 + 32455809 = 4828^2 + 5697^2 .

It is a cyclic number.

It is not a de Polignac number, because 55765393 - 2⁹ = 55764881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55765343) 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, 121530 + ... + 121987.

It is an arithmetic number, because the mean of its divisors is an integer number (14002285).

Almost surely, 2^55765393 is an apocalyptic number.

It is an amenable number.

55765393 is a deficient number, since it is larger than the sum of its proper divisors (243747).

55765393 is a wasteful number, since it uses less digits than its factorization.

55765393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243746.

The product of its digits is 425250, while the sum is 43.

The square root of 55765393 is about 7467.6229819133. The cubic root of 55765393 is about 382.0512184277.

The spelling of 55765393 in words is "fifty-five million, seven hundred sixty-five thousand, three hundred ninety-three".