51036123 has 4 divisors (see below), whose sum is σ = 68048168. Its totient is φ = 34024080.

The previous prime is 51036113. The next prime is 51036131. The reversal of 51036123 is 32163015.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51036123 - 2⁴ = 51036107 is a prime.

It is a super-2 number, since 2×51036123² = 5209371701742258, which contains 22 as substring.

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 51036123.

It is not an unprimeable number, because it can be changed into a prime (51036113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8506018 + ... + 8506023.

It is an arithmetic number, because the mean of its divisors is an integer number (17012042).

Almost surely, 2^51036123 is an apocalyptic number.

51036123 is a deficient number, since it is larger than the sum of its proper divisors (17012045).

51036123 is a wasteful number, since it uses less digits than its factorization.

51036123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17012044.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51036123 is about 7143.9570967357. The cubic root of 51036123 is about 370.9305115628.

Adding to 51036123 its reverse (32163015), we get a palindrome (83199138).

The spelling of 51036123 in words is "fifty-one million, thirty-six thousand, one hundred twenty-three".