56240609 has 2 divisors, whose sum is σ = 56240610. Its totient is φ = 56240608.

The previous prime is 56240593. The next prime is 56240633. The reversal of 56240609 is 90604265.

56240609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 10543009 = 6760^2 + 3247^2 .

It is a cyclic number.

It is not a de Polignac number, because 56240609 - 2⁴ = 56240593 is a prime.

It is a super-2 number, since 2×56240609² = 6326012201381762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56240669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28120304 + 28120305.

It is an arithmetic number, because the mean of its divisors is an integer number (28120305).

Almost surely, 2^56240609 is an apocalyptic number.

It is an amenable number.

56240609 is a deficient number, since it is larger than the sum of its proper divisors (1).

56240609 is an equidigital number, since it uses as much as digits as its factorization.

56240609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 56240609 is about 7499.3739072005. The cubic root of 56240609 is about 383.1333923082.

The spelling of 56240609 in words is "fifty-six million, two hundred forty thousand, six hundred nine".