5656423 has 2 divisors, whose sum is σ = 5656424. Its totient is φ = 5656422.

The previous prime is 5656411. The next prime is 5656439. The reversal of 5656423 is 3246565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5656423 - 2⁹ = 5655911 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5656463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828211 + 2828212.

It is an arithmetic number, because the mean of its divisors is an integer number (2828212).

Almost surely, 2^5656423 is an apocalyptic number.

5656423 is a deficient number, since it is larger than the sum of its proper divisors (1).

5656423 is an equidigital number, since it uses as much as digits as its factorization.

5656423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 5656423 is about 2378.3235692395. The cubic root of 5656423 is about 178.1752156771.

The spelling of 5656423 in words is "five million, six hundred fifty-six thousand, four hundred twenty-three".