1855255 has 16 divisors (see below), whose sum is σ = 2390400. Its totient is φ = 1378080.

The previous prime is 1855253. The next prime is 1855267. The reversal of 1855255 is 5525581.

It is not a de Polignac number, because 1855255 - 2¹ = 1855253 is a prime.

It is a super-2 number, since 2×1855255² = 6883942230050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5440 + ... + 5770.

It is an arithmetic number, because the mean of its divisors is an integer number (149400).

2^1855255 is an apocalyptic number.

1855255 is a deficient number, since it is larger than the sum of its proper divisors (535145).

1855255 is a wasteful number, since it uses less digits than its factorization.

1855255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its digits is 10000, while the sum is 31.

The square root of 1855255 is about 1362.0774574157. The cubic root of 1855255 is about 122.8762277519.

The spelling of 1855255 in words is "one million, eight hundred fifty-five thousand, two hundred fifty-five".