5657791 has 4 divisors (see below), whose sum is σ = 5680584. Its totient is φ = 5635000.

The previous prime is 5657789. The next prime is 5657831. The reversal of 5657791 is 1977565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1977565 = 5 ⋅395513.

It is a cyclic number.

It is not a de Polignac number, because 5657791 - 2¹ = 5657789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5657711) 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, 11020 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (1420146).

Almost surely, 2^5657791 is an apocalyptic number.

5657791 is a deficient number, since it is larger than the sum of its proper divisors (22793).

5657791 is a wasteful number, since it uses less digits than its factorization.

5657791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22792.

The product of its digits is 66150, while the sum is 40.

The square root of 5657791 is about 2378.6111493895. The cubic root of 5657791 is about 178.1895783493.

The spelling of 5657791 in words is "five million, six hundred fifty-seven thousand, seven hundred ninety-one".