56343409 has 2 divisors, whose sum is σ = 56343410. Its totient is φ = 56343408.

The previous prime is 56343401. The next prime is 56343421. The reversal of 56343409 is 90434365.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 48400 = 7503^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 56343409 - 2³ = 56343401 is a prime.

It is not a weakly prime, because it can be changed into another prime (56343401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28171704 + 28171705.

It is an arithmetic number, because the mean of its divisors is an integer number (28171705).

Almost surely, 2^56343409 is an apocalyptic number.

It is an amenable number.

56343409 is a deficient number, since it is larger than the sum of its proper divisors (1).

56343409 is an equidigital number, since it uses as much as digits as its factorization.

56343409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 56343409 is about 7506.2246835543. The cubic root of 56343409 is about 383.3666883809.

The spelling of 56343409 in words is "fifty-six million, three hundred forty-three thousand, four hundred nine".