1055905 has 8 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 840048.

The previous prime is 1055897. The next prime is 1055911. The reversal of 1055905 is 5095501.

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 1055905 - 2³ = 1055897 is a prime.

It is a super-2 number, since 2×1055905² = 2229870738050, which contains 22 as substring.

It is a Duffinian number.

1055905 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (159264).

2^1055905 is an apocalyptic number.

It is an amenable number.

1055905 is a deficient number, since it is larger than the sum of its proper divisors (218207).

1055905 is an equidigital number, since it uses as much as digits as its factorization.

1055905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 1055905 is about 1027.5723818788. The cubic root of 1055905 is about 101.8298136014.

The spelling of 1055905 in words is "one million, fifty-five thousand, nine hundred five".