1117257 has 16 divisors (see below), whose sum is σ = 1661760. Its totient is φ = 663552.

The previous prime is 1117253. The next prime is 1117267. The reversal of 1117257 is 7527111.

It is a happy number.

It is not a de Polignac number, because 1117257 - 2² = 1117253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1117253) 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 in 15 ways as a sum of consecutive naturals, for example, 393 + ... + 1545.

It is an arithmetic number, because the mean of its divisors is an integer number (103860).

2^1117257 is an apocalyptic number.

1117257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1117257 is a deficient number, since it is larger than the sum of its proper divisors (544503).

1117257 is a wasteful number, since it uses less digits than its factorization.

1117257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its digits is 490, while the sum is 24.

The square root of 1117257 is about 1057.0037842884. The cubic root of 1117257 is about 103.7650329018.

It can be divided in two parts, 11172 and 57, that multiplied together give a square (636804 = 798²).

The spelling of 1117257 in words is "one million, one hundred seventeen thousand, two hundred fifty-seven".