5191685 has 4 divisors (see below), whose sum is σ = 6230028. Its totient is φ = 4153344.

The previous prime is 5191673. The next prime is 5191699. The reversal of 5191685 is 5861915.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1976836 + 3214849 = 1406^2 + 1793^2 .

It is a cyclic number.

It is not a de Polignac number, because 5191685 - 2⁸ = 5191429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519164 + ... + 519173.

It is an arithmetic number, because the mean of its divisors is an integer number (1557507).

Almost surely, 2^5191685 is an apocalyptic number.

It is an amenable number.

5191685 is a deficient number, since it is larger than the sum of its proper divisors (1038343).

5191685 is a wasteful number, since it uses less digits than its factorization.

5191685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038342.

The product of its digits is 10800, while the sum is 35.

The square root of 5191685 is about 2278.5269364219. The cubic root of 5191685 is about 173.1554284945.

The spelling of 5191685 in words is "five million, one hundred ninety-one thousand, six hundred eighty-five".