51444111 has 8 divisors (see below), whose sum is σ = 68669104. Its totient is φ = 34257600.

The previous prime is 51444109. The next prime is 51444119. The reversal of 51444111 is 11144415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51444111 - 2¹ = 51444109 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 (51444119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6340 + ... + 11961.

It is an arithmetic number, because the mean of its divisors is an integer number (8583638).

Almost surely, 2^51444111 is an apocalyptic number.

51444111 is a deficient number, since it is larger than the sum of its proper divisors (17224993).

51444111 is a wasteful number, since it uses less digits than its factorization.

51444111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19241.

The product of its digits is 320, while the sum is 21.

The square root of 51444111 is about 7172.4550190294. The cubic root of 51444111 is about 371.9163082046.

Adding to 51444111 its reverse (11144415), we get a palindrome (62588526).

The spelling of 51444111 in words is "fifty-one million, four hundred forty-four thousand, one hundred eleven".