1005055 has 4 divisors (see below), whose sum is σ = 1206072. Its totient is φ = 804040.

The previous prime is 1005049. The next prime is 1005071. The reversal of 1005055 is 5505001.

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-1005055 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 4.

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, 100501 + ... + 100510.

It is an arithmetic number, because the mean of its divisors is an integer number (301518).

2^1005055 is an apocalyptic number.

1005055 is a deficient number, since it is larger than the sum of its proper divisors (201017).

1005055 is an equidigital number, since it uses as much as digits as its factorization.

1005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201016.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 1005055 is about 1002.5243139196. The cubic root of 1005055 is about 100.1682168722.

The spelling of 1005055 in words is "one million, five thousand, fifty-five".