56378709 has 12 divisors (see below), whose sum is σ = 83169216. Its totient is φ = 36785832.

The previous prime is 56378683. The next prime is 56378711. The reversal of 56378709 is 90787365.

It is a happy number.

56378709 is a `hidden beast` number, since 5 + 637 + 8 + 7 + 0 + 9 = 666.

56378709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56378709 - 2¹² = 56374613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56378759) 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 in 11 ways as a sum of consecutive naturals, for example, 66219 + ... + 67064.

It is an arithmetic number, because the mean of its divisors is an integer number (6930768).

Almost surely, 2^56378709 is an apocalyptic number.

It is an amenable number.

56378709 is a deficient number, since it is larger than the sum of its proper divisors (26790507).

56378709 is a wasteful number, since it uses less digits than its factorization.

56378709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133336 (or 133333 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 56378709 is about 7508.5756971612. The cubic root of 56378709 is about 383.4467333477.

The spelling of 56378709 in words is "fifty-six million, three hundred seventy-eight thousand, seven hundred nine".