2447855 has 4 divisors (see below), whose sum is σ = 2937432. Its totient is φ = 1958280.

The previous prime is 2447843. The next prime is 2447897. The reversal of 2447855 is 5587442.

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

It is a de Polignac number, because none of the positive numbers 2^k-2447855 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244781 + ... + 244790.

It is an arithmetic number, because the mean of its divisors is an integer number (734358).

2^2447855 is an apocalyptic number.

2447855 is a deficient number, since it is larger than the sum of its proper divisors (489577).

2447855 is an equidigital number, since it uses as much as digits as its factorization.

2447855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489576.

The product of its digits is 44800, while the sum is 35.

The square root of 2447855 is about 1564.5622390944. The cubic root of 2447855 is about 134.7706209987.

The spelling of 2447855 in words is "two million, four hundred forty-seven thousand, eight hundred fifty-five".