56385909 has 8 divisors (see below), whose sum is σ = 83534720. Its totient is φ = 37590588.

The previous prime is 56385907. The next prime is 56385911. The reversal of 56385909 is 90958365.

56385909 is a `hidden beast` number, since 5 + 638 + 5 + 9 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (56385907) and next prime (56385911).

It is not a de Polignac number, because 56385909 - 2¹ = 56385907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56385907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044157 + ... + 1044210.

It is an arithmetic number, because the mean of its divisors is an integer number (10441840).

Almost surely, 2^56385909 is an apocalyptic number.

It is an amenable number.

56385909 is a deficient number, since it is larger than the sum of its proper divisors (27148811).

56385909 is a wasteful number, since it uses less digits than its factorization.

56385909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088376 (or 2088370 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 56385909 is about 7509.0551336370. The cubic root of 56385909 is about 383.4630556971.

The spelling of 56385909 in words is "fifty-six million, three hundred eighty-five thousand, nine hundred nine".