1255216 has 20 divisors (see below), whose sum is σ = 2560600. Its totient is φ = 594432.

The previous prime is 1255211. The next prime is 1255237. The reversal of 1255216 is 6125521.

It is not an unprimeable number, because it can be changed into a prime (1255211) 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, 1761 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (128030).

2^1255216 is an apocalyptic number.

1255216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1255216 is an abundant number, since it is smaller than the sum of its proper divisors (1305384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255216 is a wasteful number, since it uses less digits than its factorization.

1255216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156 (or 4150 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 1255216 is about 1120.3642264907. The cubic root of 1255216 is about 107.8713603259.

The spelling of 1255216 in words is "one million, two hundred fifty-five thousand, two hundred sixteen".