1285055 has 12 divisors (see below), whose sum is σ = 1590120. Its totient is φ = 996912.

The previous prime is 1285051. The next prime is 1285057. The reversal of 1285055 is 5505821.

It is not a de Polignac number, because 1285055 - 2² = 1285051 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9176 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (132510).

2^1285055 is an apocalyptic number.

1285055 is a deficient number, since it is larger than the sum of its proper divisors (305065).

1285055 is an equidigital number, since it uses as much as digits as its factorization.

1285055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1285055 is about 1133.6026640759. The cubic root of 1285055 is about 108.7194479728.

The spelling of 1285055 in words is "one million, two hundred eighty-five thousand, fifty-five".