1005155 has 4 divisors (see below), whose sum is σ = 1206192. Its totient is φ = 804120.

The previous prime is 1005143. The next prime is 1005161. The reversal of 1005155 is 5515001.

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-1005155 is a prime.

It is a Duffinian 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, 100511 + ... + 100520.

It is an arithmetic number, because the mean of its divisors is an integer number (301548).

2^1005155 is an apocalyptic number.

1005155 is a deficient number, since it is larger than the sum of its proper divisors (201037).

1005155 is an equidigital number, since it uses as much as digits as its factorization.

1005155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201036.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 1005155 is about 1002.5741867812. The cubic root of 1005155 is about 100.1715389091.

The spelling of 1005155 in words is "one million, five thousand, one hundred fifty-five".