56609397 has 24 divisors (see below), whose sum is σ = 90214488. Its totient is φ = 33984000.

The previous prime is 56609387. The next prime is 56609419. The reversal of 56609397 is 79390665.

56609397 is a `hidden beast` number, since 5 + 6 + 609 + 39 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 269361 + 56340036 = 519^2 + 7506^2 .

It is not a de Polignac number, because 56609397 - 2⁴ = 56609381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56609387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104 + ... + 10697.

It is an arithmetic number, because the mean of its divisors is an integer number (3758937).

Almost surely, 2^56609397 is an apocalyptic number.

It is an amenable number.

56609397 is a deficient number, since it is larger than the sum of its proper divisors (33605091).

56609397 is a wasteful number, since it uses less digits than its factorization.

56609397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861 (or 11858 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 56609397 is about 7523.9216503098. The cubic root of 56609397 is about 383.9690119851.

The spelling of 56609397 in words is "fifty-six million, six hundred nine thousand, three hundred ninety-seven".