51234147 has 8 divisors (see below), whose sum is σ = 75902480. Its totient is φ = 34156080.

The previous prime is 51234121. The next prime is 51234151. The reversal of 51234147 is 74143215.

51234147 is a `hidden beast` number, since 512 + 3 + 4 + 147 = 666.

51234147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51234147 - 2⁷ = 51234019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1897561 = 51234147 / (5 + 1 + 2 + 3 + 4 + 1 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51234147.

It is not an unprimeable number, because it can be changed into a prime (51234167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948754 + ... + 948807.

It is an arithmetic number, because the mean of its divisors is an integer number (9487810).

Almost surely, 2^51234147 is an apocalyptic number.

51234147 is a deficient number, since it is larger than the sum of its proper divisors (24668333).

51234147 is a wasteful number, since it uses less digits than its factorization.

51234147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897570 (or 1897564 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 51234147 is about 7157.8032244537. The cubic root of 51234147 is about 371.4096385179.

The spelling of 51234147 in words is "fifty-one million, two hundred thirty-four thousand, one hundred forty-seven".