1001055 has 16 divisors (see below), whose sum is σ = 1747584. Its totient is φ = 485280.

The previous prime is 1001041. The next prime is 1001069. The reversal of 1001055 is 5501001.

It is an interprime number because it is at equal distance from previous prime (1001041) and next prime (1001069).

It is not a de Polignac number, because 1001055 - 2⁵ = 1001023 is a prime.

It is a super-2 number, since 2×1001055² = 2004222226050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2869 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (109224).

2^1001055 is an apocalyptic number.

1001055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001055 is a deficient number, since it is larger than the sum of its proper divisors (746529).

1001055 is a wasteful number, since it uses less digits than its factorization.

1001055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086.

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 1001055 is about 1000.5273609452. The cubic root of 1001055 is about 100.0351543070.

Adding to 1001055 its reverse (5501001), we get a palindrome (6502056).

The spelling of 1001055 in words is "one million, one thousand, fifty-five".