51072743 has 4 divisors (see below), whose sum is σ = 54077040. Its totient is φ = 48068448.

The previous prime is 51072737. The next prime is 51072751. The reversal of 51072743 is 34727015.

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 51072743 - 2¹⁰ = 51071719 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 (51072733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502123 + ... + 1502156.

It is an arithmetic number, because the mean of its divisors is an integer number (13519260).

Almost surely, 2^51072743 is an apocalyptic number.

51072743 is a deficient number, since it is larger than the sum of its proper divisors (3004297).

51072743 is a wasteful number, since it uses less digits than its factorization.

51072743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004296.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 51072743 is about 7146.5196424553. The cubic root of 51072743 is about 371.0192083980.

Adding to 51072743 its reverse (34727015), we get a palindrome (85799758).

It can be divided in two parts, 51072 and 743, that added together give a palindrome (51815).

The spelling of 51072743 in words is "fifty-one million, seventy-two thousand, seven hundred forty-three".