56435009 has 2 divisors, whose sum is σ = 56435010. Its totient is φ = 56435008.

The previous prime is 56435003. The next prime is 56435017. The reversal of 56435009 is 90053465.

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., 39187600 + 17247409 = 6260^2 + 4153^2 .

It is a cyclic number.

It is not a de Polignac number, because 56435009 - 2⁸ = 56434753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56435003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28217504 + 28217505.

It is an arithmetic number, because the mean of its divisors is an integer number (28217505).

Almost surely, 2^56435009 is an apocalyptic number.

It is an amenable number.

56435009 is a deficient number, since it is larger than the sum of its proper divisors (1).

56435009 is an equidigital number, since it uses as much as digits as its factorization.

56435009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 56435009 is about 7512.3238082500. The cubic root of 56435009 is about 383.5743280224.

The spelling of 56435009 in words is "fifty-six million, four hundred thirty-five thousand, nine".