1000055 has 8 divisors (see below), whose sum is σ = 1371552. Its totient is φ = 685728.

The previous prime is 1000039. The next prime is 1000081. The reversal of 1000055 is 5500001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000055 - 2⁴ = 1000039 is a prime.

It is a super-2 number, since 2×1000055² = 2000220006050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14252 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (171444).

2^1000055 is an apocalyptic number.

1000055 is a deficient number, since it is larger than the sum of its proper divisors (371497).

1000055 is an equidigital number, since it uses as much as digits as its factorization.

1000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28585.

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 1000055 is about 1000.0274996219. The cubic root of 1000055 is about 100.0018332997.

Adding to 1000055 its reverse (5500001), we get a palindrome (6500056).

The spelling of 1000055 in words is "one million, fifty-five", and thus it is an aban number and an uban number.