1055818 has 4 divisors (see below), whose sum is σ = 1583730. Its totient is φ = 527908.

The previous prime is 1055809. The next prime is 1055827. The reversal of 1055818 is 8185501.

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

It is an interprime number because it is at equal distance from previous prime (1055809) and next prime (1055827).

It can be written as a sum of positive squares in only one way, i.e., 1054729 + 1089 = 1027^2 + 33^2 .

It is a super-2 number, since 2×1055818² = 2229503298248, which contains 22 as substring.

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 263953 + ... + 263956.

2^1055818 is an apocalyptic number.

1055818 is a deficient number, since it is larger than the sum of its proper divisors (527912).

1055818 is an equidigital number, since it uses as much as digits as its factorization.

1055818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527911.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 1055818 is about 1027.5300482224. The cubic root of 1055818 is about 101.8270168103.

The spelling of 1055818 in words is "one million, fifty-five thousand, eight hundred eighteen".