55511101 has 4 divisors (see below), whose sum is σ = 55542204. Its totient is φ = 55480000.

The previous prime is 55511081. The next prime is 55511123. The reversal of 55511101 is 10111555.

It is a happy number.

55511101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10272025 + 45239076 = 3205^2 + 6726^2 .

It is a cyclic number.

It is not a de Polignac number, because 55511101 - 2¹¹ = 55509053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12700 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (13885551).

Almost surely, 2^55511101 is an apocalyptic number.

It is an amenable number.

55511101 is a deficient number, since it is larger than the sum of its proper divisors (31103).

55511101 is a wasteful number, since it uses less digits than its factorization.

55511101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31102.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 55511101 is about 7450.5772259604. The cubic root of 55511101 is about 381.4696115003.

Adding to 55511101 its reverse (10111555), we get a palindrome (65622656).

The spelling of 55511101 in words is "fifty-five million, five hundred eleven thousand, one hundred one".