4131545 has 12 divisors (see below), whose sum is σ = 5450340. Its totient is φ = 3004320.

The previous prime is 4131539. The next prime is 4131577. The reversal of 4131545 is 5451314.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 2271049 = 1364^2 + 1507^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4131545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4131545.

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 11 ways as a sum of consecutive naturals, for example, 2810 + ... + 4019.

It is an arithmetic number, because the mean of its divisors is an integer number (454195).

Almost surely, 2^4131545 is an apocalyptic number.

It is an amenable number.

4131545 is a deficient number, since it is larger than the sum of its proper divisors (1318795).

4131545 is a wasteful number, since it uses less digits than its factorization.

4131545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856 (or 6845 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 4131545 is about 2032.6202301463. The cubic root of 4131545 is about 160.4614931416.

Adding to 4131545 its reverse (5451314), we get a palindrome (9582859).

The spelling of 4131545 in words is "four million, one hundred thirty-one thousand, five hundred forty-five".