55611011 has 4 divisors (see below), whose sum is σ = 56794272. Its totient is φ = 54427752.

The previous prime is 55611007. The next prime is 55611041. The reversal of 55611011 is 11011655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55611011 - 2² = 55611007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55611001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591560 + ... + 591653.

It is an arithmetic number, because the mean of its divisors is an integer number (14198568).

Almost surely, 2^55611011 is an apocalyptic number.

55611011 is a deficient number, since it is larger than the sum of its proper divisors (1183261).

55611011 is a wasteful number, since it uses less digits than its factorization.

55611011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183260.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 55611011 is about 7457.2790614272. The cubic root of 55611011 is about 381.6983332379.

Adding to 55611011 its reverse (11011655), we get a palindrome (66622666).

The spelling of 55611011 in words is "fifty-five million, six hundred eleven thousand, eleven".