1801255 has 8 divisors (see below), whose sum is σ = 2231424. Its totient is φ = 1394400.

The previous prime is 1801237. The next prime is 1801259. The reversal of 1801255 is 5521081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1801255 - 2⁵ = 1801223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5656 + ... + 5965.

It is an arithmetic number, because the mean of its divisors is an integer number (278928).

2^1801255 is an apocalyptic number.

1801255 is a deficient number, since it is larger than the sum of its proper divisors (430169).

1801255 is a wasteful number, since it uses less digits than its factorization.

1801255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11657.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1801255 is about 1342.1084158890. The cubic root of 1801255 is about 121.6723043196.

The spelling of 1801255 in words is "one million, eight hundred one thousand, two hundred fifty-five".