2145345 has 16 divisors (see below), whose sum is σ = 3473280. Its totient is φ = 1130624.

The previous prime is 2145343. The next prime is 2145359. The reversal of 2145345 is 5435412.

It is a cyclic number.

It is not a de Polignac number, because 2145345 - 2¹ = 2145343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532 + ... + 2138.

It is an arithmetic number, because the mean of its divisors is an integer number (217080).

2^2145345 is an apocalyptic number.

It is an amenable number.

2145345 is a deficient number, since it is larger than the sum of its proper divisors (1327935).

2145345 is a wasteful number, since it uses less digits than its factorization.

2145345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its digits is 2400, while the sum is 24.

The square root of 2145345 is about 1464.6996279101. The cubic root of 2145345 is about 128.9730729207.

The spelling of 2145345 in words is "two million, one hundred forty-five thousand, three hundred forty-five".