55005147 has 6 divisors (see below), whose sum is σ = 79451892. Its totient is φ = 36670092.

The previous prime is 55005143. The next prime is 55005151. The reversal of 55005147 is 74150055.

It is an interprime number because it is at equal distance from previous prime (55005143) and next prime (55005151).

It is not a de Polignac number, because 55005147 - 2² = 55005143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55005147.

It is not an unprimeable number, because it can be changed into a prime (55005143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3055833 + ... + 3055850.

It is an arithmetic number, because the mean of its divisors is an integer number (13241982).

Almost surely, 2^55005147 is an apocalyptic number.

55005147 is a deficient number, since it is larger than the sum of its proper divisors (24446745).

55005147 is a wasteful number, since it uses less digits than its factorization.

55005147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111689 (or 6111686 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55005147 is about 7416.5454896468. The cubic root of 55005147 is about 380.3071086130.

The spelling of 55005147 in words is "fifty-five million, five thousand, one hundred forty-seven".