55839147 has 32 divisors (see below), whose sum is σ = 95628288. Its totient is φ = 28169856.

The previous prime is 55839137. The next prime is 55839151. The reversal of 55839147 is 74193855.

It is not a de Polignac number, because 55839147 - 2¹¹ = 55837099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55839099 and 55839108.

It is not an unprimeable number, because it can be changed into a prime (55839107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1833 + ... + 10725.

It is an arithmetic number, because the mean of its divisors is an integer number (2988384).

Almost surely, 2^55839147 is an apocalyptic number.

55839147 is a deficient number, since it is larger than the sum of its proper divisors (39789141).

55839147 is a wasteful number, since it uses less digits than its factorization.

55839147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939.

The product of its digits is 151200, while the sum is 42.

The square root of 55839147 is about 7472.5596016358. The cubic root of 55839147 is about 382.2195748864.

The spelling of 55839147 in words is "fifty-five million, eight hundred thirty-nine thousand, one hundred forty-seven".