55550647 has 4 divisors (see below), whose sum is σ = 55649880. Its totient is φ = 55451416.

The previous prime is 55550641. The next prime is 55550701. The reversal of 55550647 is 74605555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55550647 - 2²³ = 47162039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48772 + ... + 49897.

It is an arithmetic number, because the mean of its divisors is an integer number (13912470).

Almost surely, 2^55550647 is an apocalyptic number.

55550647 is a deficient number, since it is larger than the sum of its proper divisors (99233).

55550647 is an equidigital number, since it uses as much as digits as its factorization.

55550647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99232.

The product of its (nonzero) digits is 105000, while the sum is 37.

The square root of 55550647 is about 7453.2306418090. The cubic root of 55550647 is about 381.5601760666.

The spelling of 55550647 in words is "fifty-five million, five hundred fifty thousand, six hundred forty-seven".