51385743 has 6 divisors (see below), whose sum is σ = 74223864. Its totient is φ = 34257156.

The previous prime is 51385739. The next prime is 51385757. The reversal of 51385743 is 34758315.

51385743 is a `hidden beast` number, since 51 + 38 + 574 + 3 = 666.

It is not a de Polignac number, because 51385743 - 2² = 51385739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51385698 and 51385707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51385783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2854755 + ... + 2854772.

It is an arithmetic number, because the mean of its divisors is an integer number (12370644).

Almost surely, 2^51385743 is an apocalyptic number.

51385743 is a deficient number, since it is larger than the sum of its proper divisors (22838121).

51385743 is a wasteful number, since it uses less digits than its factorization.

51385743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709533 (or 5709530 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51385743 is about 7168.3849645509. The cubic root of 51385743 is about 371.7755974039.

The spelling of 51385743 in words is "fifty-one million, three hundred eighty-five thousand, seven hundred forty-three".