56555611 has 8 divisors (see below), whose sum is σ = 65854944. Its totient is φ = 47561280.

The previous prime is 56555593. The next prime is 56555633. The reversal of 56555611 is 11655565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56555611 - 2¹⁷ = 56424539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56555671) 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 7 ways as a sum of consecutive naturals, for example, 75850 + ... + 76591.

It is an arithmetic number, because the mean of its divisors is an integer number (8231868).

Almost surely, 2^56555611 is an apocalyptic number.

56555611 is a deficient number, since it is larger than the sum of its proper divisors (9299333).

56555611 is a wasteful number, since it uses less digits than its factorization.

56555611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152501.

The product of its digits is 22500, while the sum is 34.

The square root of 56555611 is about 7520.3464680824. The cubic root of 56555611 is about 383.8473672727.

It can be divided in two parts, 56 and 555611, that multiplied together give a triangular number (31114216 = T₇₈₈₈).

The spelling of 56555611 in words is "fifty-six million, five hundred fifty-five thousand, six hundred eleven".