1255556 has 6 divisors (see below), whose sum is σ = 2197230. Its totient is φ = 627776.

The previous prime is 1255549. The next prime is 1255559. The reversal of 1255556 is 6555521.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 1156 = 1120^2 + 34^2 .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1255559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156941 + ... + 156948.

It is an arithmetic number, because the mean of its divisors is an integer number (366205).

2^1255556 is an apocalyptic number.

It is an amenable number.

1255556 is a deficient number, since it is larger than the sum of its proper divisors (941674).

1255556 is a wasteful number, since it uses less digits than its factorization.

1255556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313893 (or 313891 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 1255556 is about 1120.5159525861. The cubic root of 1255556 is about 107.8810991415.

The spelling of 1255556 in words is "one million, two hundred fifty-five thousand, five hundred fifty-six".