51745111 has 4 divisors (see below), whose sum is σ = 56449224. Its totient is φ = 47041000.

The previous prime is 51745103. The next prime is 51745121. The reversal of 51745111 is 11154715.

51745111 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 51745111 - 2³ = 51745103 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 (51745121) 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, 2352040 + ... + 2352061.

It is an arithmetic number, because the mean of its divisors is an integer number (14112306).

Almost surely, 2^51745111 is an apocalyptic number.

51745111 is a deficient number, since it is larger than the sum of its proper divisors (4704113).

51745111 is a wasteful number, since it uses less digits than its factorization.

51745111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704112.

The product of its digits is 700, while the sum is 25.

The square root of 51745111 is about 7193.4074679529. The cubic root of 51745111 is about 372.6402600791.

Adding to 51745111 its reverse (11154715), we get a palindrome (62899826).

The spelling of 51745111 in words is "fifty-one million, seven hundred forty-five thousand, one hundred eleven".