1217056 has 24 divisors (see below), whose sum is σ = 2433564. Its totient is φ = 599040.

The previous prime is 1217053. The next prime is 1217057. The reversal of 1217056 is 6507121.

It can be written as a sum of positive squares in 2 ways, for example, as 1210000 + 7056 = 1100^2 + 84^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217053) 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, 2076 + ... + 2596.

2^1217056 is an apocalyptic number.

1217056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1217056 is a deficient number, since it is larger than the sum of its proper divisors (1216508).

1217056 is an equidigital number, since it uses as much as digits as its factorization.

1217056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1217056 is about 1103.2026105843. The cubic root of 1217056 is about 106.7669542915.

It can be divided in two parts, 121 and 7056, that multiplied together give a square (853776 = 924²).

The spelling of 1217056 in words is "one million, two hundred seventeen thousand, fifty-six".