55120147 has 2 divisors, whose sum is σ = 55120148. Its totient is φ = 55120146.

The previous prime is 55120127. The next prime is 55120189. The reversal of 55120147 is 74102155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55120147 - 2¹¹ = 55118099 is a prime.

It is not a weakly prime, because it can be changed into another prime (55120127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560073 + 27560074.

It is an arithmetic number, because the mean of its divisors is an integer number (27560074).

Almost surely, 2^55120147 is an apocalyptic number.

55120147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120147 is an equidigital number, since it uses as much as digits as its factorization.

55120147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 55120147 is about 7424.2943772456. The cubic root of 55120147 is about 380.5719618488.

The spelling of 55120147 in words is "fifty-five million, one hundred twenty thousand, one hundred forty-seven".