51147673 has 4 divisors (see below), whose sum is σ = 51361920. Its totient is φ = 50933428.

The previous prime is 51147661. The next prime is 51147697. The reversal of 51147673 is 37674115.

51147673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51147673 - 2¹³ = 51139481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51147073) 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 3 ways as a sum of consecutive naturals, for example, 106765 + ... + 107242.

It is an arithmetic number, because the mean of its divisors is an integer number (12840480).

Almost surely, 2^51147673 is an apocalyptic number.

It is an amenable number.

51147673 is a deficient number, since it is larger than the sum of its proper divisors (214247).

51147673 is a wasteful number, since it uses less digits than its factorization.

51147673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214246.

The product of its digits is 17640, while the sum is 34.

The square root of 51147673 is about 7151.7601330022. The cubic root of 51147673 is about 371.2005633515.

It can be divided in two parts, 511 and 47673, that added together give a palindrome (48184).

The spelling of 51147673 in words is "fifty-one million, one hundred forty-seven thousand, six hundred seventy-three".