51328741 has 4 divisors (see below), whose sum is σ = 51451084. Its totient is φ = 51206400.

The previous prime is 51328721. The next prime is 51328759. The reversal of 51328741 is 14782315.

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 13764100 + 37564641 = 3710^2 + 6129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51328741 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 (51328721) 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, 60540 + ... + 61381.

It is an arithmetic number, because the mean of its divisors is an integer number (12862771).

Almost surely, 2^51328741 is an apocalyptic number.

It is an amenable number.

51328741 is a deficient number, since it is larger than the sum of its proper divisors (122343).

51328741 is a wasteful number, since it uses less digits than its factorization.

51328741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122342.

The product of its digits is 6720, while the sum is 31.

The square root of 51328741 is about 7164.4079308761. The cubic root of 51328741 is about 371.6380768113.

The spelling of 51328741 in words is "fifty-one million, three hundred twenty-eight thousand, seven hundred forty-one".