5181605 has 16 divisors (see below), whose sum is σ = 7305984. Its totient is φ = 3478080.

The previous prime is 5181599. The next prime is 5181611. The reversal of 5181605 is 5061815.

It is an interprime number because it is at equal distance from previous prime (5181599) and next prime (5181611).

It is not a de Polignac number, because 5181605 - 2⁶ = 5181541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2909 + ... + 4338.

It is an arithmetic number, because the mean of its divisors is an integer number (456624).

Almost surely, 2^5181605 is an apocalyptic number.

5181605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5181605 is a deficient number, since it is larger than the sum of its proper divisors (2124379).

5181605 is a wasteful number, since it uses less digits than its factorization.

5181605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 5181605 is about 2276.3139062968. The cubic root of 5181605 is about 173.0432916483.

The spelling of 5181605 in words is "five million, one hundred eighty-one thousand, six hundred five".