55163611 has 2 divisors, whose sum is σ = 55163612. Its totient is φ = 55163610.

The previous prime is 55163587. The next prime is 55163621. The reversal of 55163611 is 11636155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55163611 - 2¹¹ = 55161563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55163611.

It is not a weakly prime, because it can be changed into another prime (55163621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27581805 + 27581806.

It is an arithmetic number, because the mean of its divisors is an integer number (27581806).

Almost surely, 2^55163611 is an apocalyptic number.

55163611 is a deficient number, since it is larger than the sum of its proper divisors (1).

55163611 is an equidigital number, since it uses as much as digits as its factorization.

55163611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 55163611 is about 7427.2209472992. The cubic root of 55163611 is about 380.6719666250.

Adding to 55163611 its reverse (11636155), we get a palindrome (66799766).

The spelling of 55163611 in words is "fifty-five million, one hundred sixty-three thousand, six hundred eleven".