55011011 has 4 divisors (see below), whose sum is σ = 60012024. Its totient is φ = 50010000.

The previous prime is 55010993. The next prime is 55011017. The reversal of 55011011 is 11011055.

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 55011011 - 2¹⁴ = 54994627 is a prime.

It is a super-2 number, since 2×55011011² = 6052422662484242, which contains 22 as substring.

It is a Duffinian number.

55011011 is a modest number, since divided by 11011 gives 55 as remainder.

It is not an unprimeable number, because it can be changed into a prime (55011017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500490 + ... + 2500511.

It is an arithmetic number, because the mean of its divisors is an integer number (15003006).

Almost surely, 2^55011011 is an apocalyptic number.

55011011 is a deficient number, since it is larger than the sum of its proper divisors (5001013).

55011011 is a wasteful number, since it uses less digits than its factorization.

55011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001012.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 55011011 is about 7416.9408114127. The cubic root of 55011011 is about 380.3206227522.

Adding to 55011011 its reverse (11011055), we get a palindrome (66022066).

The spelling of 55011011 in words is "fifty-five million, eleven thousand, eleven".