2147045 has 4 divisors (see below), whose sum is σ = 2576460. Its totient is φ = 1717632.

The previous prime is 2147039. The next prime is 2147051. The reversal of 2147045 is 5407412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2147039) and next prime (2147051).

It can be written as a sum of positive squares in 2 ways, for example, as 343396 + 1803649 = 586^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147045 - 2⁸ = 2146789 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2147045.

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, 214700 + ... + 214709.

It is an arithmetic number, because the mean of its divisors is an integer number (644115).

2^2147045 is an apocalyptic number.

It is an amenable number.

2147045 is a deficient number, since it is larger than the sum of its proper divisors (429415).

2147045 is an equidigital number, since it uses as much as digits as its factorization.

2147045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429414.

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

The square root of 2147045 is about 1465.2798367547. The cubic root of 2147045 is about 129.0071305876.

The spelling of 2147045 in words is "two million, one hundred forty-seven thousand, forty-five".