1055909 has 4 divisors (see below), whose sum is σ = 1058016. Its totient is φ = 1053804.

The previous prime is 1055897. The next prime is 1055911. The reversal of 1055909 is 9095501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9095501 = 223 ⋅40787.

It is a cyclic number.

It is not a de Polignac number, because 1055909 - 2⁴ = 1055893 is a prime.

It is a super-2 number, since 2×1055909² = 2229887632562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055939) 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, 182 + ... + 1464.

It is an arithmetic number, because the mean of its divisors is an integer number (264504).

2^1055909 is an apocalyptic number.

It is an amenable number.

1055909 is a deficient number, since it is larger than the sum of its proper divisors (2107).

1055909 is an equidigital number, since it uses as much as digits as its factorization.

1055909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 1055909 is about 1027.5743282118. The cubic root of 1055909 is about 101.8299421858.

The spelling of 1055909 in words is "one million, fifty-five thousand, nine hundred nine".