1081005 has 16 divisors (see below), whose sum is σ = 1821120. Its totient is φ = 546048.

The previous prime is 1080983. The next prime is 1081027. The reversal of 1081005 is 5001801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1080983) and next prime (1081027).

It is not a de Polignac number, because 1081005 - 2⁵ = 1080973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1612 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (113820).

2^1081005 is an apocalyptic number.

1081005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081005 is a deficient number, since it is larger than the sum of its proper divisors (740115).

1081005 is a wasteful number, since it uses less digits than its factorization.

1081005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1081005 is about 1039.7139029560. The cubic root of 1081005 is about 102.6303714865.

Adding to 1081005 its reverse (5001801), we get a palindrome (6082806).

The spelling of 1081005 in words is "one million, eighty-one thousand, five".