55685697 has 8 divisors (see below), whose sum is σ = 74285856. Its totient is φ = 37104672.

The previous prime is 55685687. The next prime is 55685723. The reversal of 55685697 is 79658655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55685697 - 2⁴ = 55685681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55685657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4693 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (9285732).

Almost surely, 2^55685697 is an apocalyptic number.

It is an amenable number.

55685697 is a deficient number, since it is larger than the sum of its proper divisors (18600159).

55685697 is a wasteful number, since it uses less digits than its factorization.

55685697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9567.

The product of its digits is 2268000, while the sum is 51.

The square root of 55685697 is about 7462.2849717764. The cubic root of 55685697 is about 381.8691313633.

The spelling of 55685697 in words is "fifty-five million, six hundred eighty-five thousand, six hundred ninety-seven".