1055831 has 4 divisors (see below), whose sum is σ = 1206672. Its totient is φ = 904992.

The previous prime is 1055827. The next prime is 1055839. The reversal of 1055831 is 1385501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1055831 - 2² = 1055827 is a prime.

It is a super-2 number, since 2×1055831² = 2229558201122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1055797 and 1055806.

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 3 ways as a sum of consecutive naturals, for example, 75410 + ... + 75423.

It is an arithmetic number, because the mean of its divisors is an integer number (301668).

2^1055831 is an apocalyptic number.

1055831 is a deficient number, since it is larger than the sum of its proper divisors (150841).

1055831 is an equidigital number, since it uses as much as digits as its factorization.

1055831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150840.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1055831 is about 1027.5363740520. The cubic root of 1055831 is about 101.8274347313.

The spelling of 1055831 in words is "one million, fifty-five thousand, eight hundred thirty-one".