51023123 has 4 divisors (see below), whose sum is σ = 51207600. Its totient is φ = 50838648.

The previous prime is 51023107. The next prime is 51023129. The reversal of 51023123 is 32132015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32132015 = 5 ⋅6426403.

It is a cyclic number.

It is not a de Polignac number, because 51023123 - 2⁴ = 51023107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91823 + ... + 92376.

It is an arithmetic number, because the mean of its divisors is an integer number (12801900).

Almost surely, 2^51023123 is an apocalyptic number.

51023123 is a deficient number, since it is larger than the sum of its proper divisors (184477).

51023123 is a wasteful number, since it uses less digits than its factorization.

51023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184476.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51023123 is about 7143.0471789006. The cubic root of 51023123 is about 370.8990142242.

Adding to 51023123 its reverse (32132015), we get a palindrome (83155138).

The spelling of 51023123 in words is "fifty-one million, twenty-three thousand, one hundred twenty-three".