1125217 has 2 divisors, whose sum is σ = 1125218. Its totient is φ = 1125216.

The previous prime is 1125209. The next prime is 1125221. The reversal of 1125217 is 7125211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853776 + 271441 = 924^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125217 - 2³ = 1125209 is a prime.

It is a super-2 number, since 2×1125217² = 2532226594178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1125194 and 1125203.

It is not a weakly prime, because it can be changed into another prime (1125017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562608 + 562609.

It is an arithmetic number, because the mean of its divisors is an integer number (562609).

2^1125217 is an apocalyptic number.

It is an amenable number.

1125217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125217 is an equidigital number, since it uses as much as digits as its factorization.

1125217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140, while the sum is 19.

The square root of 1125217 is about 1060.7624616284. The cubic root of 1125217 is about 104.0108778070.

It can be divided in two parts, 112 and 5217, that added together give a square (5329 = 73²).

The spelling of 1125217 in words is "one million, one hundred twenty-five thousand, two hundred seventeen".