55144147 has 2 divisors, whose sum is σ = 55144148. Its totient is φ = 55144146.

The previous prime is 55144123. The next prime is 55144151. The reversal of 55144147 is 74144155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55144147 - 2¹⁵ = 55111379 is a prime.

It is not a weakly prime, because it can be changed into another prime (55144157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27572073 + 27572074.

It is an arithmetic number, because the mean of its divisors is an integer number (27572074).

Almost surely, 2^55144147 is an apocalyptic number.

55144147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55144147 is an equidigital number, since it uses as much as digits as its factorization.

55144147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 55144147 is about 7425.9105165629. The cubic root of 55144147 is about 380.6271890948.

The spelling of 55144147 in words is "fifty-five million, one hundred forty-four thousand, one hundred forty-seven".