51154223 has 4 divisors (see below), whose sum is σ = 51379800. Its totient is φ = 50928648.

The previous prime is 51154217. The next prime is 51154261. The reversal of 51154223 is 32245115.

51154223 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 51154223 - 2⁸ = 51153967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51154273) 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, 112448 + ... + 112901.

It is an arithmetic number, because the mean of its divisors is an integer number (12844950).

Almost surely, 2^51154223 is an apocalyptic number.

51154223 is a deficient number, since it is larger than the sum of its proper divisors (225577).

51154223 is a wasteful number, since it uses less digits than its factorization.

51154223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225576.

The product of its digits is 1200, while the sum is 23.

The square root of 51154223 is about 7152.2180475710. The cubic root of 51154223 is about 371.2164080600.

Adding to 51154223 its reverse (32245115), we get a palindrome (83399338).

The spelling of 51154223 in words is "fifty-one million, one hundred fifty-four thousand, two hundred twenty-three".