2245217 has 4 divisors (see below), whose sum is σ = 2417940. Its totient is φ = 2072496.

The previous prime is 2245189. The next prime is 2245223. The reversal of 2245217 is 7125422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7125422 = 2 ⋅3562711.

It can be written as a sum of positive squares in 2 ways, for example, as 1442401 + 802816 = 1201^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245217 - 2⁶ = 2245153 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²⁰ + 4⁵ + 5⁶ + 2²⁰ + 1 + 7³ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2245192 and 2245201.

It is not an unprimeable number, because it can be changed into a prime (2245247) 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 3 ways as a sum of consecutive naturals, for example, 86342 + ... + 86367.

It is an arithmetic number, because the mean of its divisors is an integer number (604485).

2^2245217 is an apocalyptic number.

It is an amenable number.

2245217 is a deficient number, since it is larger than the sum of its proper divisors (172723).

2245217 is a wasteful number, since it uses less digits than its factorization.

2245217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172722.

The product of its digits is 1120, while the sum is 23.

The square root of 2245217 is about 1498.4048184653. The cubic root of 2245217 is about 130.9441519415.

The spelling of 2245217 in words is "two million, two hundred forty-five thousand, two hundred seventeen".