55340689 has 4 divisors (see below), whose sum is σ = 55572480. Its totient is φ = 55108900.

The previous prime is 55340687. The next prime is 55340707. The reversal of 55340689 is 98604355.

55340689 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 a cyclic number.

It is not a de Polignac number, because 55340689 - 2¹ = 55340687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55340683) 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, 115537 + ... + 116014.

It is an arithmetic number, because the mean of its divisors is an integer number (13893120).

Almost surely, 2^55340689 is an apocalyptic number.

It is an amenable number.

55340689 is a deficient number, since it is larger than the sum of its proper divisors (231791).

55340689 is a wasteful number, since it uses less digits than its factorization.

55340689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231790.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 55340689 is about 7439.1322746675. The cubic root of 55340689 is about 381.0788570205.

The spelling of 55340689 in words is "fifty-five million, three hundred forty thousand, six hundred eighty-nine".