4008545 has 4 divisors (see below), whose sum is σ = 4810260. Its totient is φ = 3206832.

The previous prime is 4008523. The next prime is 4008551. The reversal of 4008545 is 5458004.

4008545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1661521 + 2347024 = 1289^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 4008545 - 2⁸ = 4008289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400850 + ... + 400859.

It is an arithmetic number, because the mean of its divisors is an integer number (1202565).

Almost surely, 2^4008545 is an apocalyptic number.

It is an amenable number.

4008545 is a deficient number, since it is larger than the sum of its proper divisors (801715).

4008545 is an equidigital number, since it uses as much as digits as its factorization.

4008545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801714.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4008545 is about 2002.1351103260. The cubic root of 4008545 is about 158.8530609843.

The spelling of 4008545 in words is "four million, eight thousand, five hundred forty-five".