1855223 has 4 divisors (see below), whose sum is σ = 1858488. Its totient is φ = 1851960.

The previous prime is 1855219. The next prime is 1855229. The reversal of 1855223 is 3225581.

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 1855223 - 2² = 1855219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1855192 and 1855201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855229) 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, 533 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (464622).

2^1855223 is an apocalyptic number.

1855223 is a deficient number, since it is larger than the sum of its proper divisors (3265).

1855223 is an equidigital number, since it uses as much as digits as its factorization.

1855223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its digits is 2400, while the sum is 26.

The square root of 1855223 is about 1362.0657106028. The cubic root of 1855223 is about 122.8755212790.

The spelling of 1855223 in words is "one million, eight hundred fifty-five thousand, two hundred twenty-three".