4549145 has 4 divisors (see below), whose sum is σ = 5458980. Its totient is φ = 3639312.

The previous prime is 4549133. The next prime is 4549159. The reversal of 4549145 is 5419454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5419454 = 2 ⋅2709727.

It can be written as a sum of positive squares in 2 ways, for example, as 1763584 + 2785561 = 1328^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 4549145 - 2¹⁰ = 4548121 is a prime.

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, 454910 + ... + 454919.

It is an arithmetic number, because the mean of its divisors is an integer number (1364745).

Almost surely, 2^4549145 is an apocalyptic number.

It is an amenable number.

4549145 is a deficient number, since it is larger than the sum of its proper divisors (909835).

4549145 is an equidigital number, since it uses as much as digits as its factorization.

4549145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909834.

The product of its digits is 14400, while the sum is 32.

The square root of 4549145 is about 2132.8724762629. The cubic root of 4549145 is about 165.6951996237.

The spelling of 4549145 in words is "four million, five hundred forty-nine thousand, one hundred forty-five".