1051855 has 16 divisors (see below), whose sum is σ = 1479744. Its totient is φ = 702720.

The previous prime is 1051849. The next prime is 1051879. The reversal of 1051855 is 5581501.

It is not a de Polignac number, because 1051855 - 2³ = 1051847 is a prime.

It is a super-2 number, since 2×1051855² = 2212797882050, which contains 22 as substring.

1051855 is a lucky 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, 1069 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (92484).

2^1051855 is an apocalyptic number.

1051855 is a deficient number, since it is larger than the sum of its proper divisors (427889).

1051855 is an equidigital number, since it uses as much as digits as its factorization.

1051855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1051855 is about 1025.5998244930. The cubic root of 1051855 is about 101.6994549205.

The spelling of 1051855 in words is "one million, fifty-one thousand, eight hundred fifty-five".