55555647 has 8 divisors (see below), whose sum is σ = 84656256. Its totient is φ = 31746072.

The previous prime is 55555631. The next prime is 55555651. The reversal of 55555647 is 74655555.

It is a happy number.

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

It is not a de Polignac number, because 55555647 - 2⁴ = 55555631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55555599 and 55555608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322733 + ... + 1322774.

It is an arithmetic number, because the mean of its divisors is an integer number (10582032).

Almost surely, 2^55555647 is an apocalyptic number.

55555647 is a deficient number, since it is larger than the sum of its proper divisors (29100609).

55555647 is a wasteful number, since it uses less digits than its factorization.

55555647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645517.

The product of its digits is 525000, while the sum is 42.

The square root of 55555647 is about 7453.5660592766. The cubic root of 55555647 is about 381.5716235398.

The spelling of 55555647 in words is "fifty-five million, five hundred fifty-five thousand, six hundred forty-seven".