5191657 has 4 divisors (see below), whose sum is σ = 5212116. Its totient is φ = 5171200.

The previous prime is 5191651. The next prime is 5191673. The reversal of 5191657 is 7561915.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7561915 = 5 ⋅1512383.

It can be written as a sum of positive squares in 2 ways, for example, as 2298256 + 2893401 = 1516^2 + 1701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5191657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5191651) 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, 9844 + ... + 10357.

It is an arithmetic number, because the mean of its divisors is an integer number (1303029).

Almost surely, 2^5191657 is an apocalyptic number.

It is an amenable number.

5191657 is a deficient number, since it is larger than the sum of its proper divisors (20459).

5191657 is a wasteful number, since it uses less digits than its factorization.

5191657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20458.

The product of its digits is 9450, while the sum is 34.

The square root of 5191657 is about 2278.5207920930. The cubic root of 5191657 is about 173.1551172044.

The spelling of 5191657 in words is "five million, one hundred ninety-one thousand, six hundred fifty-seven".