2145307 has 2 divisors, whose sum is σ = 2145308. Its totient is φ = 2145306.

The previous prime is 2145289. The next prime is 2145329. The reversal of 2145307 is 7035412.

It is an a-pointer prime, because the next prime (2145329) can be obtained adding 2145307 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145307 - 2¹¹ = 2143259 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2145337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072653 + 1072654.

It is an arithmetic number, because the mean of its divisors is an integer number (1072654).

2^2145307 is an apocalyptic number.

2145307 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145307 is an equidigital number, since it uses as much as digits as its factorization.

2145307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2145307 is about 1464.6866559097. The cubic root of 2145307 is about 128.9723114261.

The spelling of 2145307 in words is "two million, one hundred forty-five thousand, three hundred seven".