5640261 has 16 divisors (see below), whose sum is σ = 8329728. Its totient is φ = 3366000.

The previous prime is 5640253. The next prime is 5640281. The reversal of 5640261 is 1620465.

It is not a de Polignac number, because 5640261 - 2³ = 5640253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (520608).

Almost surely, 2^5640261 is an apocalyptic number.

It is an amenable number.

5640261 is a deficient number, since it is larger than the sum of its proper divisors (2689467).

5640261 is a wasteful number, since it uses less digits than its factorization.

5640261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 5640261 is about 2374.9233671847. The cubic root of 5640261 is about 178.0053548025.

The spelling of 5640261 in words is "five million, six hundred forty thousand, two hundred sixty-one".