2145499 has 4 divisors (see below), whose sum is σ = 2258440. Its totient is φ = 2032560.

The previous prime is 2145497. The next prime is 2145529. The reversal of 2145499 is 9945412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145499 - 2¹ = 2145497 is a prime.

It is a Duffinian number.

2145499 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2145497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56442 + ... + 56479.

It is an arithmetic number, because the mean of its divisors is an integer number (564610).

2^2145499 is an apocalyptic number.

2145499 is a deficient number, since it is larger than the sum of its proper divisors (112941).

2145499 is a wasteful number, since it uses less digits than its factorization.

2145499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112940.

The product of its digits is 12960, while the sum is 34.

The square root of 2145499 is about 1464.7521974723. The cubic root of 2145499 is about 128.9761588855.

The spelling of 2145499 in words is "two million, one hundred forty-five thousand, four hundred ninety-nine".