56611305 has 40 divisors (see below), whose sum is σ = 102461832. Its totient is φ = 29901312.

The previous prime is 56611297. The next prime is 56611307. The reversal of 56611305 is 50311665.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 55666521 = 972^2 + 7461^2 .

It is not a de Polignac number, because 56611305 - 2³ = 56611297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56611307) 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 39 ways as a sum of consecutive naturals, for example, 45147 + ... + 46383.

Almost surely, 2^56611305 is an apocalyptic number.

It is an amenable number.

56611305 is a deficient number, since it is larger than the sum of its proper divisors (45850527).

56611305 is a wasteful number, since it uses less digits than its factorization.

56611305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 56611305 is about 7524.0484448201. The cubic root of 56611305 is about 383.9733257839.

The spelling of 56611305 in words is "fifty-six million, six hundred eleven thousand, three hundred five".