5657731 has 2 divisors, whose sum is σ = 5657732. Its totient is φ = 5657730.

The previous prime is 5657711. The next prime is 5657749. The reversal of 5657731 is 1377565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5657731 - 2⁵ = 5657699 is a prime.

It is a super-2 number, since 2×5657731² = 64019840136722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5657711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828865 + 2828866.

It is an arithmetic number, because the mean of its divisors is an integer number (2828866).

Almost surely, 2^5657731 is an apocalyptic number.

5657731 is a deficient number, since it is larger than the sum of its proper divisors (1).

5657731 is an equidigital number, since it uses as much as digits as its factorization.

5657731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 34.

The square root of 5657731 is about 2378.5985369541. The cubic root of 5657731 is about 178.1889484560.

The spelling of 5657731 in words is "five million, six hundred fifty-seven thousand, seven hundred thirty-one".