815041 has 4 divisors (see below), whose sum is σ = 817492. Its totient is φ = 812592.

The previous prime is 815033. The next prime is 815047. The reversal of 815041 is 140518.

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 484416 + 330625 = 696^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 815041 - 2³ = 815033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (815047) by changing a digit.

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, 630 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (204373).

2⁸¹⁵⁰⁴¹ is an apocalyptic number.

It is an amenable number.

815041 is a deficient number, since it is larger than the sum of its proper divisors (2451).

815041 is a wasteful number, since it uses less digits than its factorization.

815041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 815041 is about 902.7962117776. The cubic root of 815041 is about 93.4099526739.

Adding to 815041 its reverse (140518), we get a palindrome (955559).

It can be divided in two parts, 81 and 5041, that multiplied together give a square (408321 = 639²).

The spelling of 815041 in words is "eight hundred fifteen thousand, forty-one".