51124111 has 4 divisors (see below), whose sum is σ = 51138952. Its totient is φ = 51109272.

The previous prime is 51124103. The next prime is 51124123. The reversal of 51124111 is 11142115.

51124111 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11142115 = 5 ⋅2228423.

It is a cyclic number.

It is not a de Polignac number, because 51124111 - 2³ = 51124103 is a prime.

It is a super-2 number, since 2×51124111² = 5227349451080642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124511) 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, 736 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (12784738).

Almost surely, 2^51124111 is an apocalyptic number.

51124111 is a deficient number, since it is larger than the sum of its proper divisors (14841).

51124111 is an equidigital number, since it uses as much as digits as its factorization.

51124111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840.

The product of its digits is 40, while the sum is 16.

The square root of 51124111 is about 7150.1126564551. The cubic root of 51124111 is about 371.1435547557.

Adding to 51124111 its reverse (11142115), we get a palindrome (62266226).

The spelling of 51124111 in words is "fifty-one million, one hundred twenty-four thousand, one hundred eleven".