5643261 has 24 divisors (see below), whose sum is σ = 8867040. Its totient is φ = 3437856.

The previous prime is 5643259. The next prime is 5643263. The reversal of 5643261 is 1623465.

It is an interprime number because it is at equal distance from previous prime (5643259) and next prime (5643263).

It is not a de Polignac number, because 5643261 - 2¹ = 5643259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16090 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (369460).

Almost surely, 2^5643261 is an apocalyptic number.

It is an amenable number.

5643261 is a deficient number, since it is larger than the sum of its proper divisors (3223779).

5643261 is a wasteful number, since it uses less digits than its factorization.

5643261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 502 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 5643261 is about 2375.5548825485. The cubic root of 5643261 is about 178.0369089814.

The spelling of 5643261 in words is "five million, six hundred forty-three thousand, two hundred sixty-one".