56055511 has 4 divisors (see below), whose sum is σ = 59352912. Its totient is φ = 52758112.

The previous prime is 56055469. The next prime is 56055583. The reversal of 56055511 is 11555065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11555065 = 5 ⋅2311013.

It is a cyclic number.

It is not a de Polignac number, because 56055511 - 2¹¹ = 56053463 is a prime.

It is a super-2 number, since 2×56055511² = 6284440626942242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56055511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56055011) 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 3 ways as a sum of consecutive naturals, for example, 1648675 + ... + 1648708.

It is an arithmetic number, because the mean of its divisors is an integer number (14838228).

Almost surely, 2^56055511 is an apocalyptic number.

56055511 is a deficient number, since it is larger than the sum of its proper divisors (3297401).

56055511 is a wasteful number, since it uses less digits than its factorization.

56055511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297400.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 56055511 is about 7487.0228395538. The cubic root of 56055511 is about 382.7126099533.

The spelling of 56055511 in words is "fifty-six million, fifty-five thousand, five hundred eleven".