55165150181 has 2 divisors, whose sum is σ = 55165150182. Its totient is φ = 55165150180.

The previous prime is 55165150177. The next prime is 55165150277. The reversal of 55165150181 is 18105156155.

55165150181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52079347681 + 3085802500 = 228209^2 + 55550^2 .

It is a cyclic number.

It is not a de Polignac number, because 55165150181 - 2² = 55165150177 is a prime.

It is a super-2 number, since 2×55165150181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55165150121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27582575090 + 27582575091.

It is an arithmetic number, because the mean of its divisors is an integer number (27582575091).

Almost surely, 2^55165150181 is an apocalyptic number.

It is an amenable number.

55165150181 is a deficient number, since it is larger than the sum of its proper divisors (1).

55165150181 is an equidigital number, since it uses as much as digits as its factorization.

55165150181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30000, while the sum is 38.

The spelling of 55165150181 in words is "fifty-five billion, one hundred sixty-five million, one hundred fifty thousand, one hundred eighty-one".