2447245 has 4 divisors (see below), whose sum is σ = 2936700. Its totient is φ = 1957792.

The previous prime is 2447239. The next prime is 2447251. The reversal of 2447245 is 5427442.

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: 5427442 = 2 ⋅2713721.

It is an interprime number because it is at equal distance from previous prime (2447239) and next prime (2447251).

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 1771561 = 822^2 + 1331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2447245 - 2¹⁷ = 2316173 is a prime.

2447245 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244720 + ... + 244729.

It is an arithmetic number, because the mean of its divisors is an integer number (734175).

2^2447245 is an apocalyptic number.

It is an amenable number.

2447245 is a deficient number, since it is larger than the sum of its proper divisors (489455).

2447245 is an equidigital number, since it uses as much as digits as its factorization.

2447245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489454.

The product of its digits is 8960, while the sum is 28.

The square root of 2447245 is about 1564.3672842399. The cubic root of 2447245 is about 134.7594252227.

The spelling of 2447245 in words is "two million, four hundred forty-seven thousand, two hundred forty-five".