1055838 has 32 divisors (see below), whose sum is σ = 2520576. Its totient is φ = 288288.

The previous prime is 1055827. The next prime is 1055839. The reversal of 1055838 is 8385501.

It is a happy number.

It is a super-2 number, since 2×1055838² = 2229587764488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (78768).

2^1055838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260288).

1055838 is an abundant number, since it is smaller than the sum of its proper divisors (1464738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1055838 is a wasteful number, since it uses less digits than its factorization.

1055838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1055838 is about 1027.5397802518. The cubic root of 1055838 is about 101.8276597643.

The spelling of 1055838 in words is "one million, fifty-five thousand, eight hundred thirty-eight".