1023255 has 12 divisors (see below), whose sum is σ = 1773720. Its totient is φ = 545712.

The previous prime is 1023229. The next prime is 1023257. The reversal of 1023255 is 5523201.

It is a happy number.

It is not a de Polignac number, because 1023255 - 2¹⁵ = 990487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023257) 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 11 ways as a sum of consecutive naturals, for example, 11325 + ... + 11414.

It is an arithmetic number, because the mean of its divisors is an integer number (147810).

2^1023255 is an apocalyptic number.

1023255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1023255 is a deficient number, since it is larger than the sum of its proper divisors (750465).

1023255 is a wasteful number, since it uses less digits than its factorization.

1023255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22750 (or 22747 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1023255 is about 1011.5606753922. The cubic root of 1023255 is about 100.7692342805.

Adding to 1023255 its reverse (5523201), we get a palindrome (6546456).

The spelling of 1023255 in words is "one million, twenty-three thousand, two hundred fifty-five".