55000011 has 16 divisors (see below), whose sum is σ = 81704448. Its totient is φ = 32623200.

The previous prime is 54999943. The next prime is 55000013. The reversal of 55000011 is 11000055.

It is not a de Polignac number, because 55000011 - 2¹⁸ = 54737867 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55000013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16180 + ... + 19281.

It is an arithmetic number, because the mean of its divisors is an integer number (5106528).

Almost surely, 2^55000011 is an apocalyptic number.

55000011 is a deficient number, since it is larger than the sum of its proper divisors (26704437).

55000011 is a wasteful number, since it uses less digits than its factorization.

55000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35522.

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 55000011 is about 7416.1992287155. The cubic root of 55000011 is about 380.2952714292.

Adding to 55000011 its reverse (11000055), we get a palindrome (66000066).

The spelling of 55000011 in words is "fifty-five million, eleven", and thus it is an aban number and an uban number.