51028723 has 4 divisors (see below), whose sum is σ = 52273368. Its totient is φ = 49784080.

The previous prime is 51028721. The next prime is 51028739. The reversal of 51028723 is 32782015.

51028723 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.

It is a cyclic number.

It is not a de Polignac number, because 51028723 - 2¹ = 51028721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51028691 and 51028700.

It is not an unprimeable number, because it can be changed into a prime (51028721) 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, 622261 + ... + 622342.

It is an arithmetic number, because the mean of its divisors is an integer number (13068342).

Almost surely, 2^51028723 is an apocalyptic number.

51028723 is a deficient number, since it is larger than the sum of its proper divisors (1244645).

51028723 is a wasteful number, since it uses less digits than its factorization.

51028723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244644.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 51028723 is about 7143.4391577167. The cubic root of 51028723 is about 370.9125829644.

The spelling of 51028723 in words is "fifty-one million, twenty-eight thousand, seven hundred twenty-three".