51154442223 has 16 divisors (see below), whose sum is σ = 69065087616. Its totient is φ = 33673824800.

The previous prime is 51154442221. The next prime is 51154442233. The reversal of 51154442223 is 32224445115.

It is a cyclic number.

It is not a de Polignac number, because 51154442223 - 2¹ = 51154442221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51154442221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412648 + ... + 522098.

It is an arithmetic number, because the mean of its divisors is an integer number (4316567976).

Almost surely, 2^51154442223 is an apocalyptic number.

51154442223 is a deficient number, since it is larger than the sum of its proper divisors (17910645393).

51154442223 is a wasteful number, since it uses less digits than its factorization.

51154442223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111414.

The product of its digits is 38400, while the sum is 33.

Adding to 51154442223 its reverse (32224445115), we get a palindrome (83378887338).

The spelling of 51154442223 in words is "fifty-one billion, one hundred fifty-four million, four hundred forty-two thousand, two hundred twenty-three".