5091857 has 4 divisors (see below), whose sum is σ = 5391396. Its totient is φ = 4792320.

The previous prime is 5091847. The next prime is 5091881. The reversal of 5091857 is 7581905.

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 4289041 + 802816 = 2071^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 5091857 - 2⁴ = 5091841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5091817) 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, 149744 + ... + 149777.

It is an arithmetic number, because the mean of its divisors is an integer number (1347849).

Almost surely, 2^5091857 is an apocalyptic number.

It is an amenable number.

5091857 is a deficient number, since it is larger than the sum of its proper divisors (299539).

5091857 is a wasteful number, since it uses less digits than its factorization.

5091857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299538.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 5091857 is about 2256.5143473951. The cubic root of 5091857 is about 172.0384018275.

The spelling of 5091857 in words is "five million, ninety-one thousand, eight hundred fifty-seven".