2445545 has 4 divisors (see below), whose sum is σ = 2934660. Its totient is φ = 1956432.

The previous prime is 2445533. The next prime is 2445557. The reversal of 2445545 is 5455442.

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 (2445533) and next prime (2445557).

It can be written as a sum of positive squares in 2 ways, for example, as 1721344 + 724201 = 1312^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445545 - 2⁶ = 2445481 is a prime.

It is a Curzon 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, 244550 + ... + 244559.

It is an arithmetic number, because the mean of its divisors is an integer number (733665).

2^2445545 is an apocalyptic number.

It is an amenable number.

2445545 is a deficient number, since it is larger than the sum of its proper divisors (489115).

2445545 is an equidigital number, since it uses as much as digits as its factorization.

2445545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489114.

The product of its digits is 16000, while the sum is 29.

The square root of 2445545 is about 1563.8238391839. The cubic root of 2445545 is about 134.7282140594.

The spelling of 2445545 in words is "two million, four hundred forty-five thousand, five hundred forty-five".