4007545 has 16 divisors (see below), whose sum is σ = 4998672. Its totient is φ = 3082240.

The previous prime is 4007527. The next prime is 4007551. The reversal of 4007545 is 5457004.

It can be written as a sum of positive squares in 8 ways, for example, as 724201 + 3283344 = 851^2 + 1812^2 .

It is not a de Polignac number, because 4007545 - 2⁵ = 4007513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23079 + ... + 23251.

It is an arithmetic number, because the mean of its divisors is an integer number (312417).

Almost surely, 2^4007545 is an apocalyptic number.

It is an amenable number.

4007545 is a deficient number, since it is larger than the sum of its proper divisors (991127).

4007545 is a wasteful number, since it uses less digits than its factorization.

4007545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 4007545 is about 2001.8853613531. The cubic root of 4007545 is about 158.8398503495.

The spelling of 4007545 in words is "four million, seven thousand, five hundred forty-five".