51706273 has 4 divisors (see below), whose sum is σ = 51724288. Its totient is φ = 51688260.

The previous prime is 51706267. The next prime is 51706297. The reversal of 51706273 is 37260715.

51706273 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, and also an emirpimes, since its reverse is a distinct semiprime: 37260715 = 5 ⋅7452143.

It is a cyclic number.

It is not a de Polignac number, because 51706273 - 2¹³ = 51698081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51706873) 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, 3633 + ... + 10798.

It is an arithmetic number, because the mean of its divisors is an integer number (12931072).

Almost surely, 2^51706273 is an apocalyptic number.

It is an amenable number.

51706273 is a deficient number, since it is larger than the sum of its proper divisors (18015).

51706273 is a wasteful number, since it uses less digits than its factorization.

51706273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18014.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 51706273 is about 7190.7074060902. The cubic root of 51706273 is about 372.5470066649.

Adding to 51706273 its reverse (37260715), we get a palindrome (88966988).

The spelling of 51706273 in words is "fifty-one million, seven hundred six thousand, two hundred seventy-three".