55395689 has 4 divisors (see below), whose sum is σ = 55418256. Its totient is φ = 55373124.

The previous prime is 55395677. The next prime is 55395701. The reversal of 55395689 is 98659355.

55395689 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (55395677) and next prime (55395701).

It is a cyclic number.

It is not a de Polignac number, because 55395689 - 2²⁴ = 38618473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55395619) 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, 7079 + ... + 12684.

It is an arithmetic number, because the mean of its divisors is an integer number (13854564).

Almost surely, 2^55395689 is an apocalyptic number.

It is an amenable number.

55395689 is a deficient number, since it is larger than the sum of its proper divisors (22567).

55395689 is a wasteful number, since it uses less digits than its factorization.

55395689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22566.

The product of its digits is 1458000, while the sum is 50.

The square root of 55395689 is about 7442.8280243467. The cubic root of 55395689 is about 381.2050595061.

The spelling of 55395689 in words is "fifty-five million, three hundred ninety-five thousand, six hundred eighty-nine".