1055409 has 4 divisors (see below), whose sum is σ = 1407216. Its totient is φ = 703604.

The previous prime is 1055407. The next prime is 1055413. The reversal of 1055409 is 9045501.

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.

It is a cyclic number.

It is not a de Polignac number, because 1055409 - 2¹ = 1055407 is a prime.

It is a super-2 number, since 2×1055409² = 2227776314562, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1055407) 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, 175899 + ... + 175904.

It is an arithmetic number, because the mean of its divisors is an integer number (351804).

2^1055409 is an apocalyptic number.

It is an amenable number.

1055409 is a deficient number, since it is larger than the sum of its proper divisors (351807).

1055409 is an equidigital number, since it uses as much as digits as its factorization.

1055409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351806.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1055409 is about 1027.3310080008. The cubic root of 1055409 is about 101.8138666181.

The spelling of 1055409 in words is "one million, fifty-five thousand, four hundred nine".