56430909 has 6 divisors (see below), whose sum is σ = 81511326. Its totient is φ = 37620600.

The previous prime is 56430889. The next prime is 56430929. The reversal of 56430909 is 90903465.

56430909 is a `hidden beast` number, since 5 + 643 + 0 + 9 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (56430889) and next prime (56430929).

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 27594009 = 5370^2 + 5253^2 .

It is not a de Polignac number, because 56430909 - 2⁵ = 56430877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56430929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3135042 + ... + 3135059.

It is an arithmetic number, because the mean of its divisors is an integer number (13585221).

Almost surely, 2^56430909 is an apocalyptic number.

It is an amenable number.

56430909 is a deficient number, since it is larger than the sum of its proper divisors (25080417).

56430909 is a wasteful number, since it uses less digits than its factorization.

56430909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270107 (or 6270104 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 56430909 is about 7512.0509183578. The cubic root of 56430909 is about 383.5650389135.

The spelling of 56430909 in words is "fifty-six million, four hundred thirty thousand, nine hundred nine".