56686545 has 12 divisors (see below), whose sum is σ = 98256756. Its totient is φ = 30232800.

The previous prime is 56686541. The next prime is 56686547. The reversal of 56686545 is 54568665.

It is a happy number.

56686545 is a `hidden beast` number, since 566 + 86 + 5 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22953681 + 33732864 = 4791^2 + 5808^2 .

It is not a de Polignac number, because 56686545 - 2² = 56686541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1259701 = 56686545 / (5 + 6 + 6 + 8 + 6 + 5 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 56686545.

It is not an unprimeable number, because it can be changed into a prime (56686541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629806 + ... + 629895.

It is an arithmetic number, because the mean of its divisors is an integer number (8188063).

Almost surely, 2^56686545 is an apocalyptic number.

It is an amenable number.

56686545 is a deficient number, since it is larger than the sum of its proper divisors (41570211).

56686545 is a wasteful number, since it uses less digits than its factorization.

56686545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259712 (or 1259709 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 56686545 is about 7529.0467524116. The cubic root of 56686545 is about 384.1433587453.

The spelling of 56686545 in words is "fifty-six million, six hundred eighty-six thousand, five hundred forty-five".