55140011 has 2 divisors, whose sum is σ = 55140012. Its totient is φ = 55140010.

The previous prime is 55139969. The next prime is 55140013. The reversal of 55140011 is 11004155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55140011 is a prime.

Together with 55140013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55140013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27570005 + 27570006.

It is an arithmetic number, because the mean of its divisors is an integer number (27570006).

Almost surely, 2^55140011 is an apocalyptic number.

55140011 is a deficient number, since it is larger than the sum of its proper divisors (1).

55140011 is an equidigital number, since it uses as much as digits as its factorization.

55140011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 55140011 is about 7425.6320269725. The cubic root of 55140011 is about 380.6176727423.

Adding to 55140011 its reverse (11004155), we get a palindrome (66144166).

The spelling of 55140011 in words is "fifty-five million, one hundred forty thousand, eleven".