5605391 has 4 divisors (see below), whose sum is σ = 6114984. Its totient is φ = 5095800.

The previous prime is 5605387. The next prime is 5605423. The reversal of 5605391 is 1935065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5605391 - 2² = 5605387 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 (5605331) 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, 254780 + ... + 254801.

It is an arithmetic number, because the mean of its divisors is an integer number (1528746).

Almost surely, 2^5605391 is an apocalyptic number.

5605391 is a deficient number, since it is larger than the sum of its proper divisors (509593).

5605391 is a wasteful number, since it uses less digits than its factorization.

5605391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509592.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 5605391 is about 2367.5706958822. The cubic root of 5605391 is about 177.6377664828.

The spelling of 5605391 in words is "five million, six hundred five thousand, three hundred ninety-one".