5091605 has 8 divisors (see below), whose sum is σ = 6155352. Its totient is φ = 4043008.

The previous prime is 5091589. The next prime is 5091613. The reversal of 5091605 is 5061905.

It can be written as a sum of positive squares in 4 ways, for example, as 47089 + 5044516 = 217^2 + 2246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5091605 - 2⁴ = 5091589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3032 + ... + 4401.

It is an arithmetic number, because the mean of its divisors is an integer number (769419).

Almost surely, 2^5091605 is an apocalyptic number.

It is an amenable number.

5091605 is a deficient number, since it is larger than the sum of its proper divisors (1063747).

5091605 is a wasteful number, since it uses less digits than its factorization.

5091605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 5091605 is about 2256.4585083710. The cubic root of 5091605 is about 172.0355636755.

The spelling of 5091605 in words is "five million, ninety-one thousand, six hundred five".