51043733 has 4 divisors (see below), whose sum is σ = 54970188. Its totient is φ = 47117280.

The previous prime is 51043723. The next prime is 51043801. The reversal of 51043733 is 33734015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32913169 + 18130564 = 5737^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 51043733 - 2¹⁸ = 50781589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51043703) 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, 1963208 + ... + 1963233.

It is an arithmetic number, because the mean of its divisors is an integer number (13742547).

Almost surely, 2^51043733 is an apocalyptic number.

It is an amenable number.

51043733 is a deficient number, since it is larger than the sum of its proper divisors (3926455).

51043733 is a wasteful number, since it uses less digits than its factorization.

51043733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926454.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 51043733 is about 7144.4896948627. The cubic root of 51043733 is about 370.9489471384.

Adding to 51043733 its reverse (33734015), we get a palindrome (84777748).

The spelling of 51043733 in words is "fifty-one million, forty-three thousand, seven hundred thirty-three".