802549 has 4 divisors (see below), whose sum is σ = 875520. Its totient is φ = 729580.

The previous prime is 802531. The next prime is 802573. The reversal of 802549 is 945208.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 802549 - 2⁷ = 802421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802589) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36469 + ... + 36490.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

2⁸⁰²⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

802549 is a deficient number, since it is larger than the sum of its proper divisors (72971).

802549 is a wasteful number, since it uses less digits than its factorization.

802549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72970.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 802549 is about 895.8509920740. The cubic root of 802549 is about 92.9302672238.

The spelling of 802549 in words is "eight hundred two thousand, five hundred forty-nine".