2803261 has 4 divisors (see below), whose sum is σ = 2806624. Its totient is φ = 2799900.

The previous prime is 2803259. The next prime is 2803291. The reversal of 2803261 is 1623082.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2803261 - 2¹ = 2803259 is a prime.

It is an Ulam number.

It is a Duffinian number.

2803261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2803201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (701656).

2^2803261 is an apocalyptic number.

It is an amenable number.

2803261 is a deficient number, since it is larger than the sum of its proper divisors (3363).

2803261 is a wasteful number, since it uses less digits than its factorization.

2803261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2803261 is about 1674.2941796471. The cubic root of 2803261 is about 141.0006706539. Note that the first 3 decimals are identical.

The spelling of 2803261 in words is "two million, eight hundred three thousand, two hundred sixty-one".